Your time is running out. Change your mind it is too late！A. sinceB. whenC. untilD. before

问题补充：

Your time is running out. Change your mind it is too late！

A. since

B. when

C. until

D. before

答案：

A. since

B. when

C. until

(答案→)D. before

解析：考查连词。Since 自从，when 当什么的时候，until 直到，before 在什么之前，趁着，句意：你的时间快用完了，趁着还不太晚改变你的主意吧。所以选D。