— 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
答案:B
— 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
答案:B