My mother is always warning me when I go out, “Don’t get off the bus ____it is s

题干

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

上一题下一题 0.85难度单项选择更新时间:2012-05-24 12:25:42

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