how can i do it it

I do not know how I can do it I don't know.Do it how can i I can do it Can you tell me how shoud I to do it 英语翻译how do i know it's you how do i know it's you ,how can w I can do it,do it,do it这首歌叫什么? ____ interesting work it is!I’m sure I can do it well.A.How I can't do it ( ) Yes i can do it I can't do it What can i do it how can you do it alone