摘要： As a young man, his father used to in the market, trying to find a job for a few coins. A. knock down B. knock about C. knock over D. knock off 第二节:完成句子(共10小题.每小题1.5分.满分15分) 根据每小题括号内的汉语提示.以及句末括号内的英语单词完成句子.

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