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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1814

-- Tom says he is too tired to go on.
-- He can’t. He ________ for an hour.

A.had worked B.has just worked
C.just worked D.has only been working
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Tomsaysheistootiredtogoon.Heca