—Look! The man at the gate        be our headmaster. He stands there every morning.—No, it        be him. He is holding a meeting in the office now.
#77353
A
must; can’t
B
must; can
C
can’t; mustn’t
D
can’ t; must
推荐题目
People ______ drive after drinking wine or beer according to the new laws. 
#75597
A
couldn’t
B
needn’t
C
wouldn’t
D
mustn’t
 Oh, I'm not feeling well in the stomach. I ________ so much fried chicken just now.
#62320
A
shouldn't eat
B
mustn't have eaten
C
mustn't eat
D
shouldn't have eaten