问题
选择题
It is 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
答案
答案：D
句意：洗了衣服你真是太好了，但是你没有洗的。mustn’t have done表达不对，wouldn’t have done 不会做的，mightn’t have done 不可能做，didn’t have to do没有必要做，根据语境应选D。