题目内容

——You didn’t wait for Mr. Black last night, did you?
——No, but we ____. He didn’t return home at all.
A．couldn’t haveB．needn’t have
C．didn’t need toD．should wait have
C
考查情态动词。根据语境“No”可知“我们没有等”。根据“He didn’t return home at all.”说明“我们不必等。”而B项表示已等过。
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