氧化铁和硫酸:I do not know why this happened!是什么意思啊

I do not know why this happened!是什么意思啊 i do not know much ,but i know i love you You have asked many I-do-not-know questions. 急！！！ I Know Why歌词 when i tear i.... dont know why i did not come I do not know what do you mean by your love Help me! Help me! Why I can not type Chinese?How can I do? Forget to remember ，or remember to forget ? I don not know what to do why are you girls ??do you know?? 1，why do not you practice the piano？2，Tell him the news after I come。