(2013·江苏南通市二模)We ________ have hurried all the way to the airport — the flight was called off because of the foggy weather.
#62421
A
mustn't
B
couldn't
C
needn't
D
wouldn't
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—May I do the rest of the work tomorrow?—Yes, of course. You finish it today.
#74448
A
needn’t
B
mustn’t
C
need
D
must
—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?
#62920
A
May
B
Must
C
Will
D
Shall
A hard-working man become a great scientist, but a great scientist be a hard-working man.
#74334
A
can’t; can
B
may not; can
C
can’t; must
D
may not; must
If you _____ smoke, please go outside because this is a non-smoking office.
#63602
A
must
B
should
C
can
D
may
—Could I invite my friends to my birthday party?—Sorry, you ______.
#75471
A
can
B
can’t
C
could
D
couldn’t