题目内容

– Who didn’t turn off the light after school yesterday?

It ______ be Lucy. She told me she was the last one to leave the classroom.

A. must B. mustn't C. might D. can't

 

A

【解析】

试题分析:must必须,一定;mustn't禁止,千万不要;might 可能;can't不能。句意:昨天放学后谁没有关灯?根据下文,她告诉我她是最后一个离开教室的。可知前文指的是,一定是露西。故选A。

考点:考查情态动词辨析

 

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