题目内容
It was very kind of you to do the washing up, but you _______ it.?
A. mustn't have done B. wouldn't have done?
C. mightn't have done D. didn't have to do ?
D
解析:
考查情态动词和虚拟语气的用法。don't have to do sth.“不必做某事”。也可以说needn't have done it。
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