--- Who told you my address ? --- I don’t remember clearly. It _____ Li Mei.  ---It _____ Li Mei. She doesn’t know it.
#88154
A
can be; mustn’t be
B
may have been;must have been
C
may have been; can’t be    
D
must have been ; can’t have been
推荐题目
Had I known about this computer program, a huge amount of time and energy________.
#87046
A
would have been saved  
B
had been saved
C
will be saved
D
was saved
.We were all waiting for you .You _____for the seaside by yourself without leaving a message.
#89123
A
mustn’t leave
B
shouldn’t have left
C
couldn’t have left
D
needn’t leave
----Where have you been?---- I _______ stuck in the traffic. I ________ here earlier.
#86732
A
had got; would have been
B
have got; would be
C
got; had done
D
got ; would have been