Question

It is very kind of you to do the washing-up, but you it. A．mustn’t have ...

Answer 1

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。