问题补充：
I believe that when the power of love overcomes the love of power，will there be peace in this world.
A. until then
B. only which
C. so
D. only then
答案：
A. until then
B. only which
C. so
(答案→)D. only then
解析：本题考查only+状语+倒装句结构。本句意为：我相信，当爱的力量战胜了权势之争，只有那时世界上才会有和平。选项A，until强调前面的某个动作或状态一直持续到什么时候；如选B项应改为(only) which will lead to peace;选C项为倒装句，表示“……也将会……”，不合句意。
