◎ 题干
The boy tries hard _______ the other students.     
[     ]
A. doesn't fall over  
B. don't for behind  
C. not to fall behind    
D. not fall behind
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“The boy tries hard _______ the other students.[ ]A. doesn't fall overB. don't for behindC. not to fall behindD. not fall behind…”主要考查了你对  【不定式】【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。