◎ 题干
Jane will have to _____ her piano practice a long  time  if she wants to be a professional concert
performer.
[     ]
A. set up
B. add up
C. keep up  
D. hold 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“Jane will have to _____ her piano practice a longtimeif she wants to be a professional concert performer.[ ]A. set up B. add up C. keep up D. hold up…”主要考查了你对  【动词短语】  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。