Mark Twain was already a successful writer before he became famous as a public speaker.

VOA: special.2010.03.21

He says whatever Mr.Obama does as president, he has already been a successful role model for community work.

VOA: standard.2010.02.24

"I think for us,we've already developed a successful paid-for model, which is working very well for us,".

VOA: standard.2009.12.05