Sentence examples for challenge has been from inspiring English sources

The biggest challenge has been drought.

His biggest challenge has been staying healthy.

Their biggest challenge has been laundry.

So the challenge has been set!

But the challenge has been their effectiveness.

A challenge has been laid down.

The biggest challenge has been having to juggle injuries.

The biggest challenge has been prying them away from customers.

The biggest challenge has been winning over townspeople.

The challenge has been met one more time.

His challenge has been how to communicate those separate needs.