Question

I didn’t see her in the meeting-room this morning．She _______ at the meeting．

A. mustn’t have spoken
B. shouldn’t have spoken
C. needn’t have spoken
D. couldn’t have spoken

Answer 1

答案D
根据句意：“我今天上午在会议室没见到她”，所以“她根本不可能在会上发言。”表示“根本不可能”用can’t/couldn’t have done形式。