–We didn’t see Tom at the lecture yesterday.–He it. He had attended the same lecture befo

问题补充：

–We didn’t see Tom at the lecture yesterday.

–He it. He had attended the same lecture before.

A. mustn’t attend

B. can’t have attended

C. would have not attended

D. needn’t have attended

答案：

A. mustn’t attend

(答案→)B. can’t have attended

C. would have not attended

D. needn’t have attended

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