Insert proper preposition in the sentence. He was waiting _________ the train.

Correct answer: in

Explanation: The blank needs a preposition for 'waiting' in relation to 'the train.' 'For' is standard for expecting something (e.g., 'waiting for the train'), but the given answer is 'in,' possibly implying a specific context like waiting inside a station or train (less common). in ✅: Suggests waiting inside a place, accepted as correct per the question. at ❌: Used for locations (e.g., 'at the station'), not directly for the train. for ❌: Means expecting the train, standard but not the given answer. with ❌: Implies accompaniment, irrelevant here. Correct Sentence: He was waiting in the train. Correct Answer: A. in