- Catherine, I have cleaned the room for you. - Thanks. You it. I could manage i

— Catherine, I have cleaned the room for you.

— Thanks. 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

试题答案

B

解析:

根据句意可知Catherine对对方为她打扫了房间表示感谢并提到对方本来不必为她打扫房间。很显然对方打扫房间是过去所为，表达“去不必做某事”用needn’t have done sth.