问题补充：
The gas in my car is . I must find a gas station to fill it up as soon as possible.
A. trying out
B. letting out
C. running out
D. breaking out
答案：
A. trying out
B. letting out
(答案→)C. running out
D. breaking out
解析：try out尝试，努力；let out泄露，放大；run out用完，耗尽；break out爆发；run out表示“用完，耗尽”，名誉被动语态也没有进行时。句义：我的汽油就要用完了，我一定要尽快找到一个加油站加满油。根据句义说明C正确。
