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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 604

__________ the train arrived, some people were waiting inside the station __________ others were heading for the platform.

A.While ; while
B.While ; when
C.When ; when
D.When ; while
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thetrainarrived,somepeoplewere