I r_____don't know how to do it.填什么?

I r_____don't know how to do it.填什么? i don't know h后填什么词 I didn’t know I don't know. i want you to know 的歌词~是h.i.t-5的新歌! “i don't know you know i don't know H.I.T. I know enough to know that I don't know sorry,I don't know. i don`t know much I don't really know. 英语；I don't know I don't know miss I don't know him. I don't know now 翻译 i don't know I Didn't Know 歌词 So know,I don't