1. My watch keeps good time.

2. Does your watch keep good time?

3. Nothing unusual - clocks behaving as before, keeping good time and continuing to emit their light beams.

4. This hanging clock doesn't keep good time.

5. All watches do not keep good time.

6. Does the wall clock keep good time?

7. If we do this, the clock will keep good time.

8. I was late last time. It'seemed my watch keep good time.

9. But like a single gear in a mechanical clock,() timeless can not keep good time all by itself.

10. Nowadays, most people prefer quartz watches because they are more convenient and keep good time.

11. Once started , the clock will go half a month and keep good time.