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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1647

It has been announced that all the students _____ put on masks before going to school in case they are infected with the terrible virus.
A shall    B will   C need    D should

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Ithasbeenannouncedthatallthest