◎ 题干

155. In Beijing volunteers are making use of every minute to ______ their foreign languages because volunteers must pass a written test and an interview.
A.polish upB.take upC.put upD.make up
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“155. In Beijing volunteers are making use of every minute to ______ their foreign languages because volunteers must pass a written test and an interview.A.poli…”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。