Before the traffic________ turns to green light, don't cross the street. [ ]A. markB. signC. si

题目简介

Before the traffic________ turns to green light, don't cross the street. [ ]A. markB. signC. si

题目详情

Before the traffic________ turns to green light, don't cross the street.
[      ]
A. mark  
B. sign  
C. signal  
D. remark
题型:单选题难度:中档来源:陕西省同步题

答案

C

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