Question

【题目】Since he has finished most of his homework at school, he _______ stay up late to finish it.

A.can'tB.couldn'tC.needn'tD.mustn't

Answer 1

【答案】C

【解析】

句意：既然他在学校已经完成了大部分的家庭作业，他就没必要熬夜来完成作业。

考查情态动词。can’t不能，不可能；couldn’t不可能；needn’t没必要；mustn’t禁止。根据“he has finished most of his homework at school”可知此处表示“没必要熬夜”，用needn’t。故选C。