问题
选择题
I didn’t see her in the meeting room this morning. She ______ have spoken at the meeting.
A.mustn’t
B.shouldn’t
C.needn’t
D.couldn’t
答案
答案:D
couldn’t have done sth 表示对过去情
况进行推测,意为“过去不可能发生过某情况”。
I didn’t see her in the meeting room this morning. She ______ have spoken at the meeting.
A.mustn’t
B.shouldn’t
C.needn’t
D.couldn’t
答案:D
couldn’t have done sth 表示对过去情
况进行推测,意为“过去不可能发生过某情况”。