第1个回答 2007-09-13
i believe i can do it better and better
第2个回答 2007-09-13
I believe I can do it better.
第3个回答 2007-09-13
(I think) I could have done better.
第4个回答 2007-09-13
i believe i can do better. and
i hold the opinion that i can do better
第5个回答 2007-09-13
I believe I can do better .