Question

【题目】You ________open the door before the car stop. It's dangerous.

A.won' tB.may notC.mustn' tD.needn't

Answer 1

【答案】C

【解析】

句意：在车停之前你一定不能开门。很危险。

考查情态动词辨析。won' t将不会；may not可能不；mustn' t禁止；needn't不需要，根据所给空后面的before the car stop. It's dangerous可知，应该是禁止开门，故选C。