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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
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. One third of the area ______ covered with trees. About seventy percent of the trees ______ been planted recently.

A.is; has B.is; have C.are; have D.are; has
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.Onethirdoftheareacoveredwitht