问题补充:
—Hurry up! The bus is coming.
—Wait a minute. Don’t cross the street the traffic lights are green.
A. until
B. after
C. while
D. since
答案:
(答案→)A. until
B. after
C. while
D. since
解析:考查情景交际和not...until...句型。“快点!车来了。”“稍等。在红绿灯变绿前不要穿过马路。”A“直到”;B“......之后”;C“当......时候”;D“自从”。根据句意可知,用的是not...until句型。故选A。