— Are you going to Beijing by air?— It’s fast, but expensive. So I’m not sure. I _____ take a train. 
#76481
A
may
B
will
C
must
D
should
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