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:
本题考查连词的用法。由语境分析可知,此处表达的意思为“在公共汽车将要停止的过程中不能下车”,能表达此意的连词只有while,表示“在……过程中”