問題詳情

31．—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

參考答案

答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)