---Someone is knocking at the door. Is it your brother?---No, it        be him. He’s gone to Hunan.
#74307
A
mustn’t
B
won’t 
C
can’t  
D
needn’t
推荐题目
Without gravity, we _____ walk on the ground as freely as we do now. 
#63085
A
couldn’t
B
mustn’t
C
shan’t
D
needn’t
This pair of shoes ______ Li Gang’s .It’s too big for him .
#76442
A
can’t be
B
could be
C
might be
D
must be