If you use an alcohol-based product instead of soap and water, make sure it contains at least sixty percent alcohol.

VOA: special.2010.09.29

Older equipment powered by fossil fuels should be inspected every year to make sure it continues to be safe.

VOA: special.2010.02.02

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

VOA: special.2010.03.17

Treasury Secretary Chase was for the plan only if Lincoln was sure it would not mean war.

VOA: special.2009.08.06

When the show first aired, some of its creators were not sure it would last one season.

VOA: special.2009.11.27

A doctor sets a broken bone to make sure it is in the correct position.

VOA: special.2009.02.04

Senator Stephen Douglas was sure it would be approved.

VOA: special.2009.04.23

"I am sure it can be removed."

VOA: special.2009.09.26

Administration officials say the United States needs to make sure it has a credible partner in the Afghan government before any change in strategy.

VOA: standard.2009.10.21

"I am really sure it is a real career.

VOA: standard.2010.04.20

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

Davis was sure that no good would result from it, not even from stronger laws on the return of escaped slaves.

VOA: special.2009.03.26

They were sure that Missus Trotter could be trusted and that it was safe to leave the money in her name.

VOA: special.2010.04.24

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