1.   A grim expression furrowed his brow.

2.   Helen and Ralph furrowed their brows for a long time.

3.   His brow was furrowed in concentration.

4.   And now, just a few miles away, just a few minutes later, it was as if the sky had furrowed its brow in rage.

5.   And while those facts are being sought, while brows are being furrowed over that course, it falls to Americans to recognize what is really at stake.

6.   As I studied his face, I got the impression as he furrowed his brow and crinkled his mouth that he was about to cry.

7.   Asked for hobbies, he furrowed his brow and rubbed his chin.

8.   Ax removes his glasses for a moment and furrows his brow, at last completing the resemblance to the Beethoven sculpture.

9.   Alec hopped up and down, his brow furrowed.

10.   Bush still has that goofy grin at odd moments, brow furrowed, biting his lip, like Johnny Carson waiting to deliver a straight line.