题目内容
一 What does the sign over there read?
一 "No person _____ smoke or carry a lighted cigarette,cigar or pipe in this area."
一 "No person _____ smoke or carry a lighted cigarette,cigar or pipe in this area."
[ ]
A. will
B. may
C. shall
D. must
B. may
C. shall
D. must
C
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