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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 292

My friend has returned from the UK. She       at Oxford for four years, during which we communicated with each other on the Internet.

A.studied B.has studied
C.had studied D.has been
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MyfriendhasreturnedfromtheUK.S