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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 919

______ they grow they make sure that what is left in the ground after harvesting______ a natural fertilizer for the next year’s crop.

A.Whatever; become B.Whichever; become C.Whatever; becomes D.Whichever; becomes
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theygrowtheymakesurethatwhatis