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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 383

Alice was supposed _____ at home, but her mother found her surfing the Internet.

A.studying B.to be studying
C.to have studied D.studied
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Alicewassupposedathome,butherm