◎ 题干
______ 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; becomeB.Whichever; becomeC.Whatever; becomesD.Whichever; becomes
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“______ 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; becomeB.Which…”主要考查了你对  【主谓一致】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。