◎ 题干
--It’s said that no one ______ light a cigarette at a gas station.
--- Yes. Safety always comes the first.
A.canB.mayC.shallD.must
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“--It’s said that no one ______ light a cigarette at a gas station. --- Yes. Safety always comes the first.A.canB.mayC.shallD.must…”主要考查了你对  【虚拟语气】【情态动词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。