In any group there were always those who wanted to challenge the system.

Every day you want to challenge yourself and get better.

"We have to do more than just look at one area of the budget when you want to challenge me."

I want to challenge all of us to keep our city great and to make it even greater.

"Some want to challenge the record of the Clinton administration," he said.

I want to challenge every state to put their best foot forward.

You're here because you want to challenge my father to a fight.

He wanted to challenge her at once, demand an answer.

What's more, it is asked, why would anyone want to challenge us?

I want to challenge this President, but not the office.