(2013·长沙二模)—The research on the new flu virus vaccine is challenging and demanding.Who do you think can do the job?—________ my students have a try?
#62416
A
May
B
Must
C
Will
D
Shall
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—Mary broke up with me!—You_ _have forgotten about the Valentine's Day．
#63101
A
shouldn't
B
couldn't
C
needn't
D
mustn't
–Look! Someone is cutting a tree on the moon.–It _______ be true, Granny. Our teacher says there is no air there.
#75239
A
can't
B
mustn't
C
may
D
should
You _____ read a book in the sun—it'll do harm to your eyes．
#63386
A
couldn't
B
wouldn't
C
needn't
D
mustn't
----Listen! Is Kitty in the next room? ---- No, it ______ be Kitty. She has gone to Beijing.
#76686
A
may not
B
can’t
C
mustn’t
D
needn’t
_Could I go to the movie this Sunday, Dad?Yes, you_____. But you ______ come back before nine.
#75448
A
should, can
B
must ,have to
C
can , have to
D
need, must