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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 999

_______ the two are only several days apart in age, they seem to belong to wholly different generations.

A.While B.When C.As D.Since
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thetwoareonlyseveraldaysaparti