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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1492

The company had about 20 notebook computers but only one-third ___________ used regularly. Now we have 60 working all day long.

A.is B.are C.was D.were
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Thecompanyhadabout20notebookco