问题
选择题
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. needn't have done
答案
答案：D
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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. needn't have done
答案：D