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

—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

考查情态动词的完成式和一般式的区别。needn’t do不需要做……；mustn’t禁止做……，都用于现在的动作；needn’t have done表示做了本来不必去做的事；shouldn’t have done是本不该做却做某事。