◎ 题干
When I knew Mary made every effort ______ the homeless, I could not but ______ her.
A.to help; admire B.to help; to admire C.helping; admire D.help; admiring
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“ When I knew Mary made every effort ______ the homeless, I could not but ______ her.A.to help; admire B.to help; to admire C.helping; admire D.help; admirin…”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。