— Who’s that man over there standing in the garden? Is it Mr. White?—It __________ be him. He has gone to Shanghai on business. 
#74578
A
shouldn’t
B
may
C
can’t
D
must
推荐题目
 I told Sally how to get here, but perhaps I ______for her.
#62233
A
had to write it out
B
must have written it out
C
should have written it out
D
ought to write it out
The flowers ________ every day, or they will die.
#76173
A
must water
B
can be watered
C
should water
D
must be watered
—Does your uncle still smoke?—He ____________given it up. It’s two years ever since he ____________.
#63200
A
can’t have; smoked
B
may have; smoked
C
should have; has smoked
D
should have; didn’t smoke