I am sure.
Are you sure?
He is sure to come.
It'll rain for sure.
Are you sure of your answer?
I'm not sure when he'll come.
I'm sure that you'll succeed.
I am not sure but she may come.
I'm sure I saw her two years ago.
I'm sure I'll be able to find it.
I am sure that he is an honest man.
Are you sure that you want to do this?
Are you sure that you want to go there?
Are you sure you don't want to go with us?
Are you sure that you want to quit your job?
Are you sure that you want to give this away?
I'm sure that my daughter will pass the exam.
If Mary slapped Tom, I'm sure he deserved it.
I'm not sure why Tom didn't want to meet Mary.
I checked to make sure that he was still alive.
Tom checked to make sure the gas was turned off.
Please be sure to take one dose three times a day.
You should make sure that you don't make Tom angry.
I'm not sure yet, but I think I'll become a teacher.
I'm sure that she has arrived at the village by now.
Please be sure to let me know your new address soon.
Be sure to drop us a line as soon as you get to London.
Before you go to visit him, you should make sure he's at home.
I'm sure it wouldn't be too hard to find out who hacked into our system.
We’re going to make sure that no one is taking advantage of the American people for their own short-term gain.