11.   He kept score and watched the clock.

12.   He watched the clock.

13.   I was looking away, watching the clock, waiting for the seconds to tick away.

14.   Measure their work by the clock, and they will watch the clock and go home when they have put in their time.

15.   Mrs. Hunt has to pack a lot in, and she constantly watches the clock.

16.   She followed a feeding schedule by watching the clock and counting the bottles the boys drank each day.

17.   She plays the cello without watching the clock.

18.   So it pays to watch the clock.

19.   The economy is shifting from manufacturing to services, and service workers do not watch the clock the way that manufacturing workers do.

20.   The new one watches the clock and exhorts advisers to get to the point.