◎ 题干

Although we’ve learned English for years, we have trouble _____ the       foreigners.
A.understandB.to understandC.understandingD.of understanding
◎ 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“Although we’ve learned English for years, we have trouble _____ the foreigners.A.understandB.to understandC.understandingD.of understanding…”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。