21.   A down-and-dirty cure is to remove the hinge pin, place it on a hard surface and whack it with a hammer.

22.   All you need is a sturdy, thin-tined fork to scrape at its hard surface until you have a mound of shavings.

23.   But manufacturers had been struggling to come up with a device that would work on the hard surface of teeth.

24.   But some of the devices, which are designed like bicycle locks, are faulty and pop open when they strike a hard surface or fall on the floor.

25.   Carpet maker Beaulieu of America Inc. has entered the hard surfaces business.

26.   Clean up wet spills on hard surfaces immediately.

27.   Contrary to popular belief, a concussion is not a bruise to the brain caused by hitting a hard surface.

28.   For years, players have complained that the hard surface and base on artificial-turf fields have led to more frequent injuries.

29.   Gently place an injured pet in a covered box with air holes or on a hard surface such as the cardboard Fratangelo used.

30.   He knocked it out against a hard surface in the darkness.