So the challenge for us is trying to figure out where to spend our money.

The biggest challenge is trying to fit everyone in and move around to serve.

"The challenges are trying to get things done with a lot less," he says.

The challenge was trying not to make the movie feel preachy or academic.

The biggest challenge for lawmakers will be trying to figure out how not to spend it all.

For me, the real challenge is trying not to get burned out.

This also implied a challenge to the Russians to try to do it first.

My biggest challenge on this job was trying to figure out what to do.

Trying to gauge future demand presents a challenge for companies of all sizes.

The challenge is trying to get the building to be handicapped-accessible by 1995.