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

—Catherine,  I have cleaned the room for you.

—Thanks. You_______ it.  I could manage itmyself.

A．needn’t do                           B．needn’t have done

C．mustn’t do                           D．shouldn’t have done

试题答案

【答案】

B

【解析】

试题