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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 1693

He _____ in a university for five years, but now he runs a company of his own.

A.has taught B.had taught C.taught D.has been teaching
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Heinauniversityforfiveyears,bu