Correct answer: at
Explanation:
The preposition “at” is used for specific, precise times. This includes parts of the day that are seen as specific points, such as “at night,” “at noon,” and “at midnight.”
Why the other options are incorrect:
• A. by: This means “not later than” a certain time (e.g., “We must leave by nightfall”). It does not mean “during.”
• C. in: We use “in” for longer, more general periods of time, such as months, years, seasons, and parts of the day like “in the morning,” “in the afternoon,” and “in the evening.” However, the exception is “at night.”
• D. during: While “during the night” is grammatically correct, it is less common and less idiomatic than the standard phrase “at night.” “During” emphasizes the duration of the entire period, but “at night” is the fixed, natural phrase used for this context.
Examples:
• The stars are visible at night.
• He always works at night.
• It is often colder at night.
Therefore, “Let us travel at night, it will be cool” is the correct and most natural way to express this idea.

Correct answer: B. over
Explanation:
The correct preposition here is “over”. We use “over” when describing movement above something, typically at a higher level.
“Over” is used to describe movement above something, such as “The bird flew over my head,” meaning it passed above the speaker’s head.
Examples:
• The plane flew over the city.
• She held the umbrella over her head.
• The horse jumped over the fence.

Other Options
• A. across: This implies movement from one side to the other on a surface (e.g., “He walked across the road”). It is not used for movement in the air above something.
• C. beside: This means “at the side of” (e.g., “She sat beside me”). It does not indicate movement above.
• D. behind: This means “at the back of” (e.g., “He stood behind me”). It describes relative position, not movement above something.

Correct answer: A. on
Explanation:
The correct preposition here is “on”. We use “on holiday” to describe someone who is taking time off from work or usual activities to relax or travel.
• “On” is used in the phrase “on holiday” or “on vacation” to describe a person’s state of being away for leisure. For example, “He’s on holiday in India” means that he is currently taking a break from work or his usual routine.
• “At” is used to refer to specific locations, like “at the beach,” but not for holidays.
• “In” typically refers to being inside a space or within a location, but it does not fit the expression for being away on holiday.
• “For” refers to purpose or duration, but is not used in this particular phrase.
Thus, “He’s on holiday in India” is correct because “on” is used for time off or vacations.

Correct answer: B. on
Explanation:
The correct preposition here is “on”. We use “on” when referring to the direction of movement, especially when talking about driving or traveling on roads or surfaces.

• “On” is used for surfaces or roads. In this case, “on the right side” refers to the surface or side of the road where cars travel.
• “In” is typically used to refer to a location or container, not the direction of movement.
• “To” usually indicates direction towards something, but it’s not used to describe a side of the road.
• “Near” means close to something, but not describing movement along a particular side.
Thus, “In India, cars go on the right side” is correct because “on” indicates movement along a specific side of the road.

Correct answer: A. on
Explanation:
The correct preposition here is “on”. We use “put on” when referring to the action of dressing in clothes.
• “On” is used with verbs like “put on” to indicate the act of wearing or dressing in clothes. For example, “Raja put on his clothes and went out.”
• “In” is used to describe being inside something (e.g., “in a room,” “in a box”), not for dressing.
• “Through” is used to describe movement from one side to another, not related to putting on clothes.
• “With” is used to describe accompaniment or association, but not for the action of dressing.
Thus, “Raja put on his clothes and went out” is correct because “on” is used to describe the act of putting clothes on.

Answer: Option A
Correct answer: A. at / for
Explanation:
This question tests the correct combination of prepositions with the verbs “apply.”
1. Applied at: We use “at” when applying to a specific place or organization, like a bank, office, or school, viewed as a physical location or entity.
Structure: apply + at + [specific place]
2. Applied for: We use “for” to indicate the purpose or the thing being requested.
Structure: apply + for + [object/position]
Analyze the sentence:
• The place of application is “the bank,” so we use “at”.
• The thing being requested is “a loan,” so we use “for”.
Why the other options are incorrect:
• B. on / for: “On” is not used with “apply” to indicate the place of application.
• C. for / for: This repeats “for” incorrectly. You apply for a loan, but at (or to) a bank.
• D. to / on: While “apply to” is also correct for institutions (“apply to the bank”), the second preposition “on” is wrong. You apply for a loan, not on a loan.
Examples:
• She applied at the restaurant for a job as a waiter.
• You should apply to the university for a scholarship.
Therefore, “He has applied at the bank for a loan” is a grammatically correct structure.

Correct answer: D. from / into
Explanation:
This sentence describes the process of translation, which requires two specific prepositions.
1. from: This indicates the source language. The original text is from English.
2. into: This indicates the target language. The text is being changed into Turkish.
The standard structure for translation is: translate + from + [source language] + into + [target language]
Why the other options are incorrect:
• A. on / over: The prepositions “on” and “over” are not used to describe the languages in translation.
• B. from / over: While “from” is correct for the source language, “over” is incorrect for the target language. We use “into,” not “over.”
• C. to/into: The preposition “to” is incorrect for the source language. We use “from” to indicate the original language. While “into” is correct for the target, the first preposition is wrong.
Examples:
• Please translate this document from Spanish into French.
• The novel was translated from Japanese into dozens of languages.

Correct answer: A. of / from
Explanation:
This question tests the correct combination of prepositions with the verb “think” and the verb “retire.”
1. Thinking of: The phrasal verb “think of” is used to indicate considering or contemplating a plan or action. It is the correct choice for considering retirement.
Structure: think + of + [gerund/noun]
2. Retiring from: The preposition “from” is used with “retire” to indicate leaving a job, position, or profession.
Structure: retire + from + [job/post/profession]
Analyze the sentence:
• He is considering the action, so we use “thinking of”.
• He is leaving his position, so we use “retiring from” his post.
Why the other options are incorrect:
• B. about / of: While “think about” is possible, “think of” is more commonly used for considering plans. More importantly, we retire from a post, not of a post.
• C. of / of: The second preposition is incorrect. We do not say “retiring of his post.”
• D. of / for: The second preposition is incorrect. “Retire for” would indicate a purpose or reason (e.g., retire for health reasons), not the position being left.
Examples:
I am thinking of starting my own business.
She retired from her teaching career after 40 years.

Correct answer: C. In
Explanation:
The correct preposition here is “in”. We use “in” to refer to cities, countries, and larger locations when talking about someone’s birthplace.
• “In” is used for locations that are larger than a specific point, such as cities, countries, or regions (e.g., “in Warsaw,” “in India,” “in Europe”).
• “At” is used for specific points or addresses, like a particular building or event.
• “On” is used for surfaces or specific days (e.g., “on the table,” “on Monday”).
• “From” is used to indicate origin, but not for stating the specific location of birth.
Thus, “Marie Curie was born in Warsaw” is correct because “in” is used for cities.

Correct answer: C. on
Explanation:
The correct preposition here is “on”. We use “on” when talking about spending money for a specific purpose or on a particular item.

• “On” is used to indicate what something is being spent on, such as goods or services. For example, “The child spends almost all his money on chocolate” means the child spends his money buying chocolate.
• “At” is used for specific locations (e.g., “at the store”), not for spending money.
• “Over” refers to duration or movement, not spending.
• “About” refers to a topic or subject but is not used when referring to money spent.
Thus, “The child spends almost all his money on chocolate” is correct because “on” is the preposition used to indicate the item or purpose of spending money.