The worker warned usthe machines.They are dangerous.[ ]A. touch B. not touchC. not to touchD. touchi

题目简介

The worker warned usthe machines.They are dangerous.[ ]A. touch B. not touchC. not to touchD. touchi

题目详情

The worker warned us           the machines.  They are dangerous. 
[     ]
A. touch              
B. not touch
C. not to touch          
D. touching
题型:单选题难度:中档来源:同步题

答案

C

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