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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 887

____ abroad for two years, the two astronauts went back home last year.

A.Educating B.Educated C.Having been educated D.being educated
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abroadfortwoyears,thetwoastron