The boy tries hard _______ the other students.[ ]A. doesn't fall overB. don't for behindC.

题目简介

The boy tries hard _______ the other students.[ ]A. doesn't fall overB. don't for behindC.

题目详情

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
题型:单选题难度:中档来源:期中题

答案

C

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