问题

Catherine, I’ve cleaned the room for you. — Thank you. You _____ it. I could manage it myself. [ ]

A: needn't do
B: needn't have done
C: mustn't do
D: shouldn't have done

正确答案是：

同类题型

Professor Williams keeps telling his students that the future to the well- educated

Once a decision has been made,all of us should____ it. [ ]

A report says an old man supports some poor children by collecting waste things.— Yes. We all feel _____ is really kind ______ him to do so much for the children.

One the last day he _________.

I had a fight with my brother this morning. — _________