——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
If you really want yourself to be in good health, you must___always___so much. 
#89962
A
not; be smoking
B
not; have smoked
C
not; to smoke
D
be not; smoking
We __________ so tired. We've only been to a party.
#90010
A
mustn't have felt
B
wouldn't have felt
C
shouldn't have felt
D
couldn't have felt
Do you think he is lazy?” “I _____ so once, but I don’t now.”
#88172
A
may have thought
B
can have thought
C
may think
D
might think