◎ 题干

. He made up his mind to devote his life____________the river____________polluted.
A.to prevent, to beB.to prevent, from being
C.to preventing, to beD.to preventing, from being
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“. He made up his mind to devote his life____________the river____________polluted.A.to prevent, to beB.to prevent, from beingC.to preventing, to beD.to prevent…”主要考查了你对  【现在分词的被动式】【现在分词】【不定式的被动式】【过去分词】  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。