◎ 题干
Happily for the boy's parents, he is working harder and harder to________ his lost time.

[     ]

A. make up for
B. catch up with
C. make use of
D. keep up with
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Happily for the boy's parents, he is working harder and harder to________ his lost time.[ ]A. make up for B. catch up with C. make use of D. keep up with …”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。