I believe I can .I believe I do.用尽我青春,.这是什么歌?

I believe I can .I believe I do.用尽我青春,.这是什么歌? i do believe .什么歌 I believe I can do 有首歌,歌词里有“i believe i believe i believe”,这是什么歌? I can't believe I'm standing here 是什么歌 I Believe I can I Believe I I Believe I Can I believe.I can. just believe i can do i believe i can fly i belive i can tach the sky是什么歌 I Believe I Can Do It I believe I can do.英文短文