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 
推荐题目
Last night Li Ping watched the football match at home when he ________ his homework. 
#87936
A
need have done
B
must haven done
C
should have done
D
could have worked
How I wish I ____ the mistake! Everybody present was angry with me.   
#90109
A
didn’t make
B
hadn’t made
C
wouldn’t make
D
wasn’t making
John ___ such a thing about you. He never speaks ill of you behind your back.
#87863
A
can’t have said
B
might not have said
C
couldn’t say
D
mustn’t have said