If you go into a store and feel that the clerk is being rude, stop and think that she____ a tough day, and put yourself in her shoes. 
#88069
A
may have
B
may have had
C
must have
D
should have had
推荐题目
--- 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
I’d rather he ______ tomorrow afternoon.
#89155
A
will come
B
comes
C
coming
D
came
The manager insisted that the work ____ finished by the end of this month. 
#87830
A
should be
B
will be
C
must be
D
ought to be
Jenny,you ________ play with the knife;you ________ hurt yourself.
#88105
A
won’t;can’t
B
shouldn’t;must
C
mustn’t;may
D
can’t;shouldn’t
If you were older, I ____ you to go there yesterday. 
#86863
A
would allow
B
should allow
C
would have allowed
D
had allowed