Mr.Powell says financial incentives like these can get employees to do something once or twice.

VOA: special.2011.02.28

And in making the announcement, President Obama said once again the American drive for a missile shield has never had anything to do with Russia.

VOA: standard.2009.09.17

He vowed once again that America will do all it can to halt piracy in the region, working in concert with other nations around the world.

VOA: standard.2009.04.13

I will give you all development and all you have to do is every once in five years make sure you come and vote for me, and this thing will go on,"

VOA: standard.2010.02.24

"People can do things in their own lives, with their children, they can do work in their communities to improve it and once you take those steps, the next logical step is to make sure that your government officials are doing the right thing."

VOA: standard.2010.04.25