未知题型
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’tave to do
- A.
【参考答案】
A
must not...have done. 意为"本不必",即已经做了某事,而时实际上不必要
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