1. I don't knock off until six.

2. What time do you knock off ( work )?

3. The headmaster is trying to knock off every objection.

4. Do you want to knock off early today?

5. My health compels me to knock off work.

6. He was planning to knock off the library.

7. When do you usually knock off for lunch?

8. I've a few letters to knock off this morning.

9. Let's knock off for lunch.

10. When pressed they knock off 10 per cent.

11. What time do you knock off?

12. I've a pile of work to knock off before I can take my holiday.

13. We usually knock off work at about twelve on Saturday.

14. If I get this report finished I'll knock off early.

15. He hired a hit-man to knock off a business rival.

16. Let's knock off work early and go to the football game.

17. He is full of imagination and can knock off a limerick in a few minutes.

18. It cost me 10 but I'll knock off 20% as it's no longer new.

19. I can knock off a poem in half an hour.

20. I'm going to knock off early today.

21. I usually knock off at about six.

22. Knock off the sludge everybody knows remains on the voter rolls, and that 72 percent pushes 90 percent.

23. I have always been able to knock off twenty years.

24. Is it OK if I knock off a little early tonight?

25. Here the X-rays knock off chlorine atoms one after another until there are only VOC-like compounds left, which are finally destroyed.

26. Let's knock off now.

27. Let's knock off for a cup of tea.

28. Some cloners think Sun regrets making previous Sparcstations too easy to knock off so it's putting some obstacles in the way.

29. They need to figure out how to make a reasonable profit and knock off the greed.

30. This could be one night he thinks he might knock off early for dinner at midnight.