考试
2020-03-16 07:15:47

1549 The alarm clock didnt rin

题目描述

The alarm clock didnt ring this morning. You______it last night.A.need to have forgotten t



The alarm clock didnt ring this morning. You______it last night.

A.need to have forgotten to wind

B.may have forgotten winding

C.ought to have forgotten to wind

D.must have forgotten to wind

请帮忙给出正确答案和分析,谢谢!

答案解析

D本题考查情态动词,从前一句可以知道,后

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