21.   Call me a clock-watcher, but I am among those who try to keep track.

22.   Careful track is kept of how US senators may vote.

23.   Companies use the service to keep tracks of calls and analyze bills.

24.   Controllers used to be able to separate planes without the use of radar by keeping track through the aid of radio beacons.

25.   Davis and his staff keep close track of the numbers.

26.   DePasco also would like to see more cooperation between state and local officials to keep better track of convicted alcohol offenders to discourage them from relapsing.

27.   Doubtless, the Social Register will be keeping track.

28.   Does your dog keep better track of your hormonal cycles than you do?

29.   Environmentalists worry, not least because no government agencies keep good track of the water use.

30.   For decades, astronomers watched these structures closely, keeping track of their positions in the sky.