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【题目】——Listen ! Is Mrs.Zhang speaking in the next room?

——It _______ be her.She has gone to the library.

A. must B. can’t C. might D. needn’t

【答案】B

【解析】

句意:——听,MrsZhang正在另一个房间里说话吗?——一定不是它,她已经去了图书馆。A. must必须;B. can’t不能;C. might可能;D. needn’t不必。根据下文She has gone to the library.可知这里是有把握的否定推测。根据题意,故选B。

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