◎ 题干
Some students have trouble _______grammar while others have difficulty      —___ new words.
A.in; rememberB.for; to remember
C.on; rememberingD.with; remembering
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Some students have trouble _______grammar while others have difficulty—___ new words.A.in; rememberB.for; to rememberC.on; rememberingD.with; remembering…”主要考查了你对  【动词短语】【动词】  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。