Sentence examples for to be challenging from inspiring English sources

The task turned out to be challenging.

The project turns out to be challenging.

We need to be challenging.

"He wanted it to be challenging".

"And it's going to be challenging".

Of course that's going to be challenging.

Joan's case turned out to be challenging.

You always need to be challenging yourself.

Putting the economic bill together turned out to be challenging.

This is what Bertolini seems to be challenging.

"This year is going to be challenging for everyone".