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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 容易
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13.About 90 percent of the equipment presented by the administration,as well as the facilities of our own,      ______made good use of in teaching.

A.have B.has C.have been D.has been
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13.About90percentoftheequipmen