--- 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
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--- I don’t mind telling you what I know.--- You_________. I’m not asking you for it.
#62796
A
mustn’t
B
may not
C
can’t
D
needn’t
--- I spent two weeks in London last summer. --- Then you must have visited the British Museum during your stay, _______ you?
#62176
A
mustn’t
B
haven’t
C
didn’t
D
hadn’t