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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 2085

. He __________ full marks, but he was so careless as to make a spelling mistake.

A.must have gained B.can have gained C.could have gained D.must gain
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.Hefullmarks,buthewassocareles