My mother is always warning me when I go out “Don’t get off the bus it is stopping.”A. un

问题补充：

My mother is always warning me when I go out, “Don’t get off the bus it is stopping.”

A. until

B. before

C. while

D. After

答案：

A. until

B. before

(答案→)C. while

D. After

解析：考查连词。此处while意为当……的时候，句意为当我出门的时候妈妈总是警告我，在停车的时候（还没停下来）不要下车。也可以说Don’t get off the bus until/before it stops.