1.   Another problem is that many banned substances lurk within over-the-counter medications or nutritional supplements that are incompletely labeled.

2.   Besides the obvious perils, obstacles for long-distance space travelers may also lurk within their own bodies.

3.   A dangerous enemy lurks within.

4.   But within such opportunities lurk other, more difficult choices, like forcing your child to work instead of going to school.

5.   But within it lurk many complexities.

6.   Deep misgivings are certain to lurk within its ranks.

7.   Doogie Howser all grown up, she writes ponderous comments about the darkness that lurks within ourselves on her computerized diary late at night.

8.   Ernie Els, Phil Mickelson, and Sergio Garcia all lurked within four shots.

9.   Hayes tried to be diplomatic, but finally conceded individuals lurk within the team sport.

10.   I have, in fact, attempted not to enter any of their rooms, for fear of what evil might lurk within.