题目内容
My sister met him at the Grand Theatre yesterday afternoon, so he ________ your lecture.
[ ]
A.couldn’t have attended
B.needn’t have attended
C.mustn’t have attended
D.shouldn’t have attended
答案:A
解析:
解析:
|
couldn’t have done表达的是过去不可能做过某事,是一种否定推测。 |
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