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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1506

Watching the online open courses of some famous European and American universities _______a new fashion among white collars in China over the past few months.

A.became B.had become C.has become D.becomes
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Watchingtheonlineopencoursesof