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803.What does the sign over there read?
No person _______ smoke or carry a lighted cigarette,cigar or pipe in this area.
A.will
B.may
C.shall
D.must
804.Guess what?I have got an A for my term paper.
Great!You ____ read widely and put a lot of work into it.
A.must
B.should
C.must have
D.should have
