Why________ you always leave your dirty clothes in the bedroom?
#62882
A
need
B
must
C
can
D
shall
推荐题目
—I think the man over there must be Bob. -- It_______ be him. He has______ to Australia. 
#78073
A
can’t, gone
B
can’t, been
C
may not, been
D
mustn’t, gone
Tom ____his homework yesterday, because he was in hospital all day.
#63327
A
can’t finish
B
couldn’t finish
C
couldn’t have finished
D
mustn’t finish