Correct answer: (D) disposed
The sentence is:
Single-use plastic refers to the entire class of items that are used once and then _____ of.
Role of the missing word:
The blank must be filled with a verb that forms a phrasal verb with the preposition “of.” The phrasal verb must mean “to get rid of” because it describes what happens to single-use plastic items after they are used once.
Context and logical consistency:
Single-use plastics are items that are thrown away after one use. The phrase “used once and then _____ of” requires a verb that pairs with “of” to mean discard or throw away. The correct phrasal verb is “disposed of,” which means to throw away or get rid of something.
Evaluation of each option based on meaning and collocation:
• Disposed – This pairs with “of” to form the phrasal verb “disposed of,” which means thrown away or gotten rid of. This is the standard and correct term used in environmental contexts like “single-use plastic.”
• Thought – “Thought of” means remembered or considered. It does not mean discarded, so it does not fit the context.
• Excluded – “Excluded of” is not a standard collocation in English. We say “excluded from,” not “excluded of.”
• Abandoned – “Abandoned of” is not standard. We say “abandoned something” or “abandoned by,” but not “abandoned of.”
• Removed – “Removed of” is not a standard phrasal verb. We say “removed from,” not “removed of.”
Grammar structure of the completed sentence:
Items that are used once and then disposed of.
The phrase “disposed of” is a phrasal verb in the past participle form, fitting the passive structure of the sentence.
Grammar Rules:
• Phrasal Verbs/Idioms: The phrasal verb “dispose of” is the correct and standard idiom used to mean “get rid of” or “throw away.” When talking about waste or items that are used once and then discarded, “disposed of” is the most appropriate and common phrase. The sentence structure requires this specific phrasal verb.

Correct answer: (E) accordance
The sentence is:
Banks should be left free to set their lending rates, in ______ with their cost of funds and market conditions, apart from borrower profile.
Role of the missing word:
The blank must be filled with a noun that follows the preposition “in” and pairs with the preposition “with” to form a fixed prepositional phrase. The phrase must mean “in agreement with” or “in conformity with.”
Context and logical consistency:
The sentence says that banks should set their lending rates based on their cost of funds and market conditions. The phrase needed is “in accordance with,” which means “in agreement or conformity with.” This is a standard fixed expression used to indicate that something is done according to a particular rule, standard, or condition.
Evaluation of each option based on collocation and meaning:
• Accordance – This forms the fixed phrase “in accordance with,” which means in agreement with or in conformity with. This fits perfectly with the context of setting rates based on cost and market conditions.
• Lending – “In lending with” is not a standard English expression. It does not create a meaningful phrase.
• Meeting – “In meeting with” is grammatically possible but means “in a meeting with,” which does not fit the context of rates being set according to conditions.
• Settling – “In settling with” means reaching an agreement with someone, but it does not fit the structure or meaning of the sentence.
• Positively – This is an adverb and cannot follow “in” in this way. “In positively with” is grammatically incorrect.
Grammar structure of the completed sentence:
… in accordance with their cost of funds and market conditions.
The phrase “in accordance with” functions as a prepositional phrase modifying the action of setting rates.
Grammar Rules:
• Prepositional Phrases: The phrase “in accordance with” means in a way that conforms to or is consistent with. It is used to show a relationship between actions or decisions and the rules, conditions, or principles they follow. In this sentence, the bank’s setting of rates should be in accordance with (consistent with) its cost of funds and market conditions.

Correct answer: (B) worse
The sentence is:
It will make a bad economic situation marginally ______ and, perhaps, even create a black market in certain articles.
Role of the missing word:
The blank must be filled with a comparative adjective because it describes how the bad economic situation will change. The sentence uses the adverb “marginally” to modify a comparative adjective, meaning “to a small degree.”
Context and logical consistency:
The sentence describes a bad economic situation. The word should indicate a negative change because the situation is already bad, and the sentence also mentions creating a black market, which is a harmful outcome. Therefore, the situation is likely to become even worse, not better. The correct word must maintain the negative tone and logical progression.
Evaluation of each option based on meaning:
• Worse – This is the comparative form of “bad.” It means the situation will become even more bad or severe. This fits perfectly because the context is already negative, and “marginally worse” means a small additional decline.
• Good – This is a positive adjective and does not match the negative context. It would contradict the meaning of “bad economic situation.”
• Better – This is the comparative form of “good.” It would mean the situation improves, which contradicts the mention of a black market and the overall negative tone.
• Weaker – This could describe the economy, but it does not pair naturally with “economic situation.” “Weaker situation” is not idiomatic, and it does not match the contrast with “bad” as directly as “worse.”
• Stronger – This is positive and opposite in meaning to the expected direction of change.
Grammar structure of the completed sentence:
It will make a bad economic situation marginally worse.
The adjective “worse” is in the comparative degree and is correctly modified by the adverb “marginally.” The sentence then continues with “and, perhaps, even create a black market,” which adds another negative consequence.
Grammar Rules:
• Contextual Appropriateness: The sentence structure and surrounding phrases (e.g., “bad economic situation,” “create a black market”) clearly indicate a negative impact. The word chosen must reflect this negative worsening of the situation. “Worse” is the comparative form of “bad” and directly indicates a deterioration of the existing negative condition.

Correct answer: (C) although
The sentence is:
Right now, the concern is about banks not lowering their lending rates fast enough, ______ the repo rate has been coming down.
Role of the missing word:
The blank must be filled with a subordinating conjunction because it introduces a subordinate clause that shows contrast with the main clause. The conjunction connects two ideas that are opposite or contradictory in nature.
Context and logical consistency:
The main clause says banks are not lowering lending rates fast enough, which is a problem. The second clause says the repo rate has been coming down. Normally, when the repo rate comes down, banks should lower lending rates. Since they are not doing so, there is a contrast between expectation and reality. The conjunction must express this contrast.
Evaluation of each option based on meaning:
• Although – This is a concessive conjunction meaning “in spite of the fact that.” It correctly shows the contrast: even though the repo rate is coming down, banks are not lowering rates fast enough.
• Because – This expresses cause and effect. It would mean banks are not lowering rates because the repo rate is coming down, which is illogical.
• Since – This can mean “because” or “from that time.” In this context, it would suggest a cause, which does not fit the contrast.
• From – This is a preposition, not a conjunction, and cannot connect clauses in this way.
• Through – This is a preposition indicating movement or medium and does not fit the grammatical structure here.
Grammar structure of the completed sentence:
Main clause: Right now, the concern is about banks not lowering their lending rates fast enough.
Subordinate clause (introduced by “although”): although the repo rate has been coming down.
“Although” correctly introduces a subordinate clause that contrasts with the main clause, and the sentence becomes: Right now, the concern is about banks not lowering their lending rates fast enough, although the repo rate has been coming down.
Grammar Rules:
• Conjunctions of Concession/Contrast: “Although” is a conjunction used to introduce a subordinate clause which states something that contrasts with the main clause. In this sentence, the fact that the repo rate has been coming down contrasts with the banks’ lack of speed in lowering their lending rates. It highlights a discrepancy or an unexpected situation.

Correct answer: (D) disregard
The sentence is:
India’s problem is not the paucity of traffic rules and regulations but a general ______ for them.
Role of the missing word:
The blank must be filled with a noun that describes the attitude or behavior of people toward traffic rules. The sentence uses the structure “not X but Y,” which means the problem is not X (paucity/absence of rules) but Y (the actual issue). Therefore, the missing word must describe a negative attitude or lack of respect for the rules.
Context and logical consistency:
The sentence says the problem is not that rules are lacking (paucity means shortage). The real issue is something else related to how people treat those rules. Since there is no shortage, the problem must be that people do not follow or respect them. The word must indicate willful ignorance, negligence, or defiance toward the rules.
Evaluation of each option based on meaning:
• Disregard – This means lack of attention, respect, or care for something. It fits perfectly because the problem is that people ignore or do not follow the traffic rules even though they exist.
• Insistence – This means demanding something firmly. It does not fit because it would suggest people are insisting on rules, which is not a problem.
• Absence – This means lack or non-existence of something. However, the first part already says “not the paucity” (not the lack), so saying “absence” would contradict the sentence structure.
• Allocation – This means distribution or assigning of resources. It is unrelated to how people respond to rules.
• None of these – Not applicable because “disregard” is a valid and correct option.
Grammar structure of the completed sentence:
India’s problem is not the paucity of traffic rules and regulations but a general disregard for them.
The noun “disregard” is followed by the preposition “for” to complete the phrase “disregard for them” (the rules). The sentence now clearly states that the problem is people’s lack of respect or attention toward the rules.
Grammar Rules:
• Contextual Appropriateness: The sentence structure implies a contrast. The problem is not a lack of rules (paucity), but rather the way people treat the existing rules. “Disregard” means the action or state of paying no attention to something; heedlessness. This perfectly fits the context of people not following rules despite their existence.

Correct answer: (B) as long as
The sentence is:
Smoking will never be given up, _____ the tobacco industry thrives.
Role of the missing word:
The blank must be filled with a subordinating conjunction because it introduces a subordinate clause that expresses a condition or duration. The conjunction connects the main clause (“Smoking will never be given up”) with the subordinate clause (“the tobacco industry thrives”).
Context and logical consistency:
The sentence means that smoking will continue to exist for the entire time that the tobacco industry continues to do well. This expresses a conditional relationship where the cessation of smoking depends on the tobacco industry’s condition. The conjunction must convey this sense of “during the time that” or “provided that.”
Evaluation of each option based on meaning:
• As long as – This means “during the whole time that” or “provided that.” It fits perfectly because it shows that smoking will not be given up for the entire duration that the tobacco industry continues to thrive.
• So that – This expresses purpose or result. It would mean smoking will never be given up in order to help the tobacco industry thrive, which changes the intended meaning.
• Though – This expresses contrast. It would mean smoking will never be given up although the tobacco industry thrives, which implies a contradiction that does not match the logical flow.
• As if – This expresses a comparison or hypothetical situation. It would mean smoking will never be given up as if the tobacco industry thrives, which does not make logical sense here.
Grammar structure of the completed sentence:
Main clause: Smoking will never be given up.
Subordinate clause (introduced by “as long as”): as long as the tobacco industry thrives.
The conjunction “as long as” correctly connects the two clauses and establishes a condition of time or duration. The completed sentence reads: Smoking will never be given up, as long as the tobacco industry thrives.
Grammar Rules:
• Conjunctions of Condition/Duration: “As long as” is a conjunction that means “only if” or “provided that,” often indicating a condition or duration. In this sentence, it implies that the act of smoking will continue on the condition that or for the duration that the tobacco industry continues to thrive. It expresses a direct dependency.

Correct answer: (C) to
The sentence is:
The Mekong is also home ______ the world’s largest catfish.
Role of the missing word:
The blank must be filled with a preposition that pairs with the noun “home” to form a fixed prepositional phrase. The correct phrase is “home to,” which means a place where something lives or is found.
Context and logical consistency:
The sentence states that the Mekong river is the habitat or location of the world’s largest catfish. The expression “home to” is commonly used to indicate that a place contains or supports a particular species, group, or activity.
Evaluation of each option based on collocation:
• To – This forms the fixed phrase “home to,” which correctly means “is the place where” something is found or lives. This is the standard and natural collocation.
• For – “Home for” is sometimes used but is less precise and not the standard expression in this context. It suggests suitability rather than actual location.
• In – “Home in” is used as a verb phrase meaning to aim at or focus on something (e.g., “home in on a target”). It is not used as a preposition after “home” in this sense.
• Within – “Home within” is not a standard collocation and does not fit the structure.
Grammar structure of the completed sentence:
The Mekong is also home to the world’s largest catfish.
The preposition “to” completes the phrase “home to,” which functions as a complement to the subject “The Mekong.”
Grammar Rules:
• Idiomatic Prepositional Phrases: The phrase “be home to” is a fixed idiom used to indicate that a place is where a particular species, group, or phenomenon is found or originates. It is the most appropriate and natural choice when describing the Mekong River as the habitat for the world’s largest catfish.

Correct answer: (D) achieving
The sentence is:
The increasing concerns about climate change point to the need for enhanced efforts towards _____ sustained growth.
Role of the missing word:
The blank must be filled with a gerund (verb + ing form) because it follows the preposition “towards.” In English, a preposition is always followed by a noun, pronoun, or gerund (verbal noun). Therefore, the verb “achieve” must take the gerund form “achieving” to function as the object of the preposition.
Context and logical consistency:
The sentence says that concerns about climate change indicate the need for stronger efforts. These efforts are directed at the goal of achieving sustained growth. The word “towards” indicates direction or purpose, and the object of “towards” must be a noun-like form that names the goal.
Evaluation of each option based on grammatical structure:
• Achieving – This is the gerund form of “achieve.” It correctly follows the preposition “towards” and functions as a noun, naming the goal of the efforts. This is the only grammatically correct choice.
• To achieve – This is an infinitive. Infinitives can act as nouns, but they do not follow prepositions directly. We say “towards achieving,” not “towards to achieve.”
• Achieve – This is the base form of the verb. It cannot follow a preposition because prepositions require a noun or gerund, not a bare verb.
• Achieved – This is the past participle or past tense form. It cannot follow a preposition as a direct object because it does not function as a noun.
Grammar structure of the completed sentence:
… towards achieving sustained growth.
The preposition “towards” is followed by the gerund “achieving,” which acts as the object of the preposition. The gerund phrase “achieving sustained growth” functions as a noun phrase indicating the goal.
Grammar Rules:
• Preposition Followed by Gerund: A preposition (like “towards”) must be followed by a noun or a gerund (the -ing form of a verb acting as a noun). “Achieving” functions as a gerund here, correctly completing the prepositional phrase “towards achieving sustained growth.” It expresses the goal or direction of the efforts.

Correct answer: (D) to seeing
The sentence is:
Are you looking forward ____ Akhil again?
Role of the missing word:
The blank must be filled with a prepositional phrase that completes the phrasal verb “looking forward to.” The verb “look forward to” is a fixed phrasal verb that always takes a preposition “to.” This preposition is followed by a noun or gerund (verb + ing) because it functions as the object of the preposition.
Context and logical consistency:
The sentence asks whether someone is excited or eager about meeting Akhil again. “Look forward to” means to anticipate with pleasure. The object of this phrasal verb must be a noun-like form that names the anticipated action.
Evaluation of each option based on grammatical structure:
• To seeing – This is the correct form. The preposition “to” is part of the phrasal verb “look forward to,” and it must be followed by a gerund “seeing.” This is the standard and fixed structure of this phrasal verb.
• Seeing – While “seeing” is a gerund, it cannot directly follow “look forward” without the required preposition “to.” The phrase is “look forward to,” not “look forward.”
• To see – This is an infinitive, not a gerund. The phrasal verb “look forward to” takes a gerund after the preposition “to.” We do not use the infinitive here.
• To be seeing – This is an infinitive continuous form. It does not follow the fixed structure of “look forward to,” which requires a simple gerund.
Grammar structure of the completed sentence:
Are you looking forward to seeing Akhil again?
The phrase “looking forward to” is a phrasal verb, where “to” is a preposition, not part of an infinitive. Therefore, it is followed by the gerund “seeing.”
Grammar Rules:
• Idiomatic Expressions: “Look forward to” is a fixed idiomatic phrase where “to” functions as a preposition, not part of an infinitive. As a preposition, it must be followed by a noun or a gerund (the -ing form of a verb acting as a noun).
• Gerund after Preposition: In the phrase “look forward to,” the word “to” is a preposition, and therefore the verb that follows it must be in the gerund form (-ing form). Thus, “seeing” is the correct choice.

Correct answer: (D) at
The sentence is:
He hinted ____ some loss of treasure.
Role of the missing word:
The blank must be filled with a preposition that pairs with the verb “hinted” to form a fixed phrasal verb. The correct phrasal verb is “hinted at,” which means to suggest or indicate something indirectly.
Context and logical consistency:
The sentence says that he gave an indirect suggestion or indication about some loss of treasure. The verb “hint” is often used with the preposition “at” to introduce the topic or subject that is being suggested indirectly.
Evaluation of each option based on collocation:
• At – This forms the phrasal verb “hinted at,” which means to refer to something indirectly or to give a slight suggestion. This fits perfectly with the meaning of the sentence.
• Of – “Hinted of” is not a standard phrasal verb in English. We do not say “hinted of” something.
• For – “Hinted for” is not a standard expression. It is not used with “hint” in this way.
• With – “Hinted with” is not standard. It would suggest using something as a means of hinting, which is not the intended meaning.
Grammar structure of the completed sentence:
He hinted at some loss of treasure.
The preposition “at” completes the phrasal verb “hinted at,” and the object “some loss of treasure” follows the preposition.
Grammar Rules:
• Idiomatic Prepositional Phrases: The verb “hint” typically takes the preposition “at” when it means to suggest something indirectly or to allude to something without explicitly stating it. The phrase “hint at something” is a standard idiom. “He hinted at some loss of treasure” means he indirectly suggested or gave a clue about some loss of treasure.

Correct answer: (C) wrote
The sentence is:
He _____ a lot of letters yesterday.
Role of the missing word:
The blank must be filled with a verb in the correct past tense form because the sentence contains the time marker “yesterday,” which indicates a specific completed action in the past.
Context and logical consistency:
The sentence describes an action that happened and was completed at a specific point in the past (yesterday). The verb must be in simple past tense to match this time reference. The focus is on the completed action itself, not on its duration or its relation to another past event.
Evaluation of each option based on tense and meaning:
• Wrote – This is the simple past tense of “write.” It correctly describes a completed action that happened yesterday. This fits the time marker perfectly.
• Had written – This is the past perfect tense. It is used to show that an action was completed before another past action. There is no second past event mentioned in the sentence, so past perfect is not needed here.
• Had been writing – This is the past perfect continuous tense. It indicates an ongoing action that was happening before another past action. There is no second action or duration emphasis, so this tense is unnecessary.
• Has written – This is the present perfect tense. It is used for actions that have relevance to the present or happened at an unspecified time in the past. “Yesterday” specifies a completed past time, so present perfect cannot be used.
Grammar structure of the completed sentence:
Subject (He) + simple past verb (wrote) + object (a lot of letters) + time adverbial (yesterday).
The simple past tense correctly matches the specific past time marker.
Grammar Rules:
• Simple Past Tense: The simple past tense (V2) is used to describe actions that were completed at a specific point in the past. The adverb of time “yesterday” clearly indicates a completed action in the past.
• Time Markers: Phrases like “yesterday,” “last week,” “a year ago,” “in 2023,” etc., are specific past time markers that usually necessitate the use of the simple past tense.