Hurry up. The car is ing.
Wait a minute, Don’t cross the street the traffic lights are green.
A. while
B. when
C. until
D. after
网友回答
A. while
B. when
(答案→)C. until
D. after
解析：while虽然，当……时；when既然，当……时；until直到；after在……之后。句意：快点，车来了。——等一下，直到绿灯亮时再穿过马路。结合语境可知选C。