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857.______,please try your best to solve the problem in time.
A.Ought you get into trouble
B.Must you get into trouble
C.Can you get into trouble
D.Should you get into trouble
858.What _____ it be?
It _____ be a man,for it is not moving.It _____ be a dustbin,I think.
A.can;may;must
B.can;can't;must
C.can;must;can
D.may;may not;could
