◎ 题干
When people move to another country, they often try _____ the customs of their native land.
[     ]
A. to keep on 
B. to keep off 
C. to keep up 
D. keeping 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“When people move to another country, they often try _____ the customs of their native land. [ ]A. to keep on B. to keep offC. to keep up D. keeping up …”主要考查了你对  【动词短语】【不定式】  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。