—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 |
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—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 |
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