He's not the one I'm Challenging.
They can be Challenging to reverse.
Challenging due to its complexity.
Writing compelling ad copy can be Challenging.
Has it made life more Challenging?
Yes, facing new limitations is Challenging.
Sometimes learning may be Challenging and frustrating.
Church fund raisers are Challenging to organize.
Cons: A little Challenging to set-up;
It was a Challenging last name.
Outside can be Challenging.
Sounds like Challenging work.
I love a Challenging race.
This can be so Challenging.
But, is it Challenging? Yes.
Wow, she's Challenging a man.
I'm all about Challenging perceptions.
I find real life Challenging enough.
My project will be more Challenging.
He's Challenging me. Don't you think?
This is a particularly Challenging case.
I think it's going to be Challenging.
Found that one Challenging, but worth it.
The mission is a very Challenging mission.
The case you've described is surely Challenging.
They're Challenging the jurisdiction of your security team.
Challenging them to change their bodies and their lives.
It might be Challenging to find the right person.