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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 926

______ the teacher has given permission, ______allowed to use the equipment in the lab.

A.Only if, are the students B.If only, the students are
C.If only, are the students D.Only if the students are
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theteacherhasgivenpermission,a