Find the correct preposition.
She is a doctor and she works ----------- night.

Question

The greedy hanker ........ the riches.

Answer 1

Step 1: Rule.
'At' is used for specific times and parts of the day: at night, at noon, at midnight.
Answer: at

List-I (Sentences)	List-II (Prepositions)
(A) The edited version of her article is indistinguishable __________ her first version.	(I) With
(B) I just don’t feel any affinity ____________ his prose style. It’s too caustic.	(II) to
(C) Her ideas are not all that dissimilar ___________ mine.	(III) for
(D) It would be wrong to mistake his diffidence ___________ his arrogance or coldness.	(IV) from

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