—How much shall I pay for the phone call? —You________. This is free of charge.
#63321
A
shouldn't
B
can't
C
don't have to
D
mustn't
推荐题目
—Tom graduated from college at a very young age.—Oh,he__________have been a very smart boy then.
#62996
A
could
B
should
C
might
D
must
This lift __________ only hold 12 people. It’s full now. We ________ wait for some more time.
#76695
A
can; have to
B
can; may
C
may; may
D
must; can
—Mike’s parents have bought a 2-floor house with a swimming pool.— Oh, it________ be very expensive.
#76640
A
must
B
can
C
need
D
should
--- The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job?---____ my students have a try?
#62974
A
Shall
B
Must
C
Will
D
May
---- It's so cold! Why are your windows still open? ---- Oh, they _______．
#63151
A
aren't closing
B
won't close
C
won't be closed
D
aren't closed