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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 容易
  • 浏览 1536

Cell phones _______ by more and more teens and many new functions _______ to them nowadays.

A.are using, have added B.is used, are adding
C.are being used, have been added D.being used, were added
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Cellphonesbymoreandmoreteensan