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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 1575

The time and effort he has devoted during the past few years ______ trees in that remote area is now considered to be of great value.

A.plant B.planting C.to plant D.to planting
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Thetimeandefforthehasdevoteddu