◎ 题干
—We should do what we can ________ the endangered animals.
—Yes, it’s our duty_________ them.
A.save; to protect B.save; protect
C.to save; protect D.to save; to protect
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“—We should do what we can ________ the endangered animals.—Yes, it’s our duty_________ them.A.save; to protectB.save; protectC.to save; protectD.to save; …”主要考查了你对  【不定式】【分词】【动名词】  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。