—Catherine, I have cleaned the room for you.—Thanks. You _________it. I could manage it myself.  
#89249
A
needn’t do
B
needn’t have done
C
mustn’t do
D
shouldn’t have done
推荐题目
 I _______ have been more than six years old when the accident happened.
#89803
A
shouldn’t
B
couldn’t
C
mustn’t
D
needn’t
It was very kind of you to do the washing up, but you _______ it.
#89688
A
mustn't have done
B
wouldn't have done
C
mightn't have done
D
didn't have to do 
---Well done, Tom!---Thanks. But given more time, I ________ it better.
#87765
A
shouldn’t have done
B
could have done
C
might not do
D
could do