中文谷Tokeepsafe,everyone
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问题详情：
To keep safe, everyone ______ to wear a hat in the building.
A. is supposed B. are supposed C. supposes
【回答】
A
知识点：情态动词
题型：选择题
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问题详情：
To keep safe, everyone ______ to wear a hat in the building.
A. is supposed B. are supposed C. supposes
【回答】
A
知识点：情态动词
题型：选择题
