——Yesterday, I didn’t see Ben at the party.   —— You _____ him. We just came back from Beijing this morning. 
#87561
A
mustn’t have seen
B
needn’t have seen
C
couldn’t see
D
can’t have seen
推荐题目
So far it has been suggested that special stress _____ on pre-school education. 
#86589
A
is laid
B
be laid
C
has been laid
D
have been laid
I_______  such a foolish mistake if I had been a little more careful.
#87484
A
wouldn’t make
B
wouldn’t have made
C
hadn’t made
D
didn’t make
It ______ heavily when he got back home for he was wet all over.
#87955
A
was raining
B
must have been raining
C
must be raining
D
rained