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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1397

    _______  in her office for nearly 20 hours, she is going home to have a rest.

A.To work B.Working C.To have worked D.Having worked
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inherofficefornearly20hours,sh