— Hurry up,. The bus is coming. — Oh, no. we mustn't cross the street ________ the traffic ligh

题目简介

— Hurry up,. The bus is coming. — Oh, no. we mustn't cross the street ________ the traffic ligh

题目详情

— Hurry up,. The bus is coming.      
— Oh, no. we mustn't cross the street ________ the traffic lights are green.    
[     ]
A. after  
B. since    
C. while    
D. until
题型:单选题难度:中档来源:专项题

答案

D

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