问题 单项选择题

Wang Qing did not come to the meeting; he ______ the notice on the blackboard since we saw it on our way to the dining-hall.

A.must not have missed

B.could not miss

C.could not have missed

D.wouldn't have missed

答案

参考答案:C

解析:表示对过去情况的否定推断,用could(can)not have done。

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