All passengers ______ go through safety check before they take the underground． A.can B.may C.must D...
2022-07-25 19:59:57 65次 2019年辽宁省大连市甘井子区中考一模英语试卷 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
All passengers ______ go through safety check before they take the underground．
A.can B.may C.must D.shall
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