◎ 题干
— What does the sign over there say?
— No person ______ enter the area without the official permission.
[     ] 
A. shall
B. may
C. must
D. will
◎ 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“—What does the sign over there say?— No person ______ enter the area without the official permission.[ ] A. shallB. mayC. mustD. will…”主要考查了你对  【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。