—Listen! Is Mary singing in the next room?—No. It _______ be Mary．She has gone to Shanghai for an important meeting.
#74311
A
can’t
B
may not
C
mustn’t
D
needn’t
推荐题目
—Are you going to Guilin by plane?—It’s fast but expensive, so I’m not sure. I __________ take a train.
#77500
A
should
B
may
C
must
D
will
Today is Wednesday. He _______ be at home. He _____ be at school.
#77250
A
can’t; can
B
can’t; must
C
mustn’t; must
D
mustn’t; can
– Must I clean up the classroom right now, Miss Green?-- No, you ______.
#75722
A
mustn’t
B
can’t
C
needn’t
D
may not
A group of young men hope that getting this kind of job will finally be the ticket to success.
#77848
A
road
B
gate
C
street
D
direction
—Look! A book is on the floor. Whose is it?—It ______ be Rick’s. It has his name on it.
#75808
A
mustn’t
B
can’t
C
must
D
need