Michael J.Fox says he is sure that a cure for Parkinson's disease will be found in the future.

VOA: special.2009.04.07

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

We need to do a much better job of making sure that what's in those vending machines is very consistent.

VOA: special.2010.03.17

The only way to be sure a person has Alzheimer's is to examine the victim's brain after death.

VOA: special.2009.09.15

Some of the guests were not sure what to think of Ellen and Doug's celebration -- or even how to describe it.

VOA: special.2011.05.23

Most importantly, he made sure Ramirez's art survived and was not thrown away by hospital workers.

VOA: special.2010.04.14

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

They were sure Conkling would be the real power in Arthur's administration.

VOA: special.2010.04.29

And,U2's manager says the band has worked hard to make sure tickets are lower in cost than in the past so that fans can afford to attend the shows.

VOA: special.2009.04.10

Scientists are still not sure what causes Alzheimer's disease.

VOA: special.2009.09.15

There was something else that was worrying Oive, and she did not know just how to begin to talk about it At last,she spoke out, not sure what Nate's answer would be.

VOA: special.2010.01.09

"If you go in and say, 'Here's a freebie,' then people are going to say, 'Sure,give it to me.'

VOA: standard.2010.08.09

"Would they have loved to beat the Canadian team? I'm sure they would have, but it's all about being an Olympian.

VOA: standard.2010.02.15

"We need to do a much better job of making sure that what's in those vending machines is very consistent.

VOA: standard.2010.03.09