◎ 题干
You have to walk       _than you do if you don't want to fall behind.    

A. fast                              
B. fastest
C. much faster                  
D. very fast
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“You have to walk _than you do if you don't want to fall behind.[ ]A. fastB. fastestC. much fasterD. very fast…”主要考查了你对  【副词的比较级,副词的最高级】  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。