It was very kind of you to do the washing-up but you it.A. needn’t doB. shouldn’t doC. m

问题补充：

It was very kind of you to do the washing-up, but you it.

A. needn’t do

B. shouldn’t do

C. mustn’t have done

D. needn’t have done

答案：

A. needn’t do

B. shouldn’t do

C. mustn’t have done

(答案→)D. needn’t have done

解析：句意，你真好，帮我洗碗，但是你本没有必要这样做。needn’t have done “原本不必做的事却做了”，故选D。