Thanks.You ______ it.I could manage it myself A.needn’t doB.needn’t have done C.mus...

题目

Thanks.You ______ it.I could manage it myself A.needn’t doB.needn’t have done C.mus...
Thanks.You ______ it.I could manage it myself A.needn’t doB.needn’t have done C.mustn’t do D.shouldn’t have done中B和D有什么区别?
Catherine,I have cleaned the room for you.

答案

b是你本不需要做
d是你本不该做
这里先说了thanks 所以应该是b,表示一种客气