21.   Keeping Al happy may depend on whether I keep my promise to keep him free of plant dirt.

22.   Matthew is determined to keep himself free, but he soon finds himself falling in love with Emmeline.

23.   On the other hand, some enthusiasts believe that the Internet should be kept free of regulations.

24.   On a recent Friday, for example, she was in her office early, despite an intention to keep Fridays free for her outside duties.

25.   Some auto industry leaders dispute how much credit Pestillo deserves for keeping Ford free of strikes.

26.   The anti-platelet drugs are designed to keep blood vessels free of clots by preventing the tiny blood cells known as platelets from sticking together.

27.   The authors of the bill signed today eliminated most insurer opposition by keeping it free of provisions to control health insurance costs.

28.   The discovery may help explain the longstanding puzzle of how the transparent parts of the eye are usually kept free of blood vessels.

29.   The idea is to keep everything free so he can do that.

30.   The star modestly tackles the role of a new savior who may just keep mankind free of Satan for the next thousand years.