---What does the sign over there read?---“No person ______ smoke or carry a lighted cigarette, cigar or pipe in this area.”A.willB.mayC.shallD.must
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C解析句意：--那边那个标牌上写的是什么？--此地严禁吸烟或携带点燃的香烟、雪茄或烟斗。此题考查情态动词的用法。shall与第二、三人称连用表示颁布法律或规定。如：It has been announced that candidates shall remain in their seats until all the papers have been collected.在所有的试卷收上来之前，应试者必须坐在自己座位上。