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-----        you swim?   ----- Yes,I can.
#75478
A
Do
B
Are
C
Does
D
Can
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 -- Must I come here at eight o’clock?                                           -No, you ____. You may come a little later.                                      
#78344
A
mustn’t   
B
needn’t   
C
may not  
D
can’t
It has been announced that all the students ____ put on masks before going to school in case they are infected with SARS virus.
#62892
A
shall
B
will
C
need
D
may
—Where _____ Mary have put the empty bottles? — She _____ them away. They must be somewhere. 
#63263
A
can; can’t have thrown
B
must; needn’t
C
must; must have thrown
D
can; mustn’t have thrown
—How much shall I pay for the telephone call? —You  _____. It's free.
#76026
A
mustn't
B
shouldn't
C
don't have to
D
can't
It’s quite warm here; we __________turn the heating on yet.
#63494
A
couldn’t
B
mustn’t
C
needn’t
D
wouldn’t
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