But Jim White made it his life's work to make sure the public would see and enjoy the cavern.

VOA: special.2009.12.07

The scientist says this mission has been planned for many years, but he is not sure when it will happen.

VOA: special.2010.05.25

But if the person who won your heart does not love you, then you are sure to have a broken heart.

VOA: special.2010.07.18

But Kurt Volker, former American ambassador to NATO, the North Atlantic Treaty Organization, is not so sure what will happen.

VOA: special.2010.07.24

But Professor Bedau says that nobody can be sure about the results of making new forms of life.

VOA: special.2010.07.20

But one thing is sure. The discoveries in the meteorite helped shape policy and exploration efforts at the United States space agency,NASA.

VOA: special.2010.07.28

It was still the American West, but men like John Slaughter made sure it was no longer wild.

VOA: special.2010.03.17

But nothing is sure, not even the identity of the Roman Catholic saint celebrated by this day.

VOA: special.2010.02.08

But one thing is sure. Developing countries need more of them as more people get heart disease.

VOA: special.2010.06.29

"Celebrating with our family." "Presents!" "I usually get presents that say Santa Claus on them but I'm not really sure if they're from him."

VOA: special.2009.12.21

I think it's still possible for us to stamp out al- Qaida, to make sure that extremism is not expanding but rather is contracting.

VOA: special.2009.02.21

But one thing is sure: the effects on your health are just as great.

VOA: special.2010.06.08

But one thing is sure: foods like doughnuts and cupcakes are a big business.

VOA: special.2010.04.12

she said. "But I still was not sure that people were speaking English."

VOA: special.2010.07.25