This is going to be a very challenging time for retailers, big and small.

He was a popular leader among the people and came into power at a challenging time.

As counselors, we understand that high school can be a challenging time for students on many levels.

"I have seen the city in its most challenging times," he said.

I know this must be an incredibly challenging time for you and your family.

This is a challenging time for people who can take changes.

In these challenging times, parents need all the tools they can use to protect their children and do what's best for them.

"The commissioner is being straight with the press and the public at a challenging time in the city's history."

This has been an interesting week, a challenging time in our country.

That is the last thing we need at this challenging time.