1. The drug acts _____ the central nervous system.

2. He's acting _____ behalf of his late father.

3. It's time for the government to act _____ the information.

4. The children were acting _____ the story of the Nativity.

5. Stop acting _____ !

6. My ankle has been acting _____ again.

7. I've added _____ two extra names.

8. We've added _____ a new bathroom.

9. I'll add your name _____ the list.

10. He added _____ £2 to the bill.

11. I'd like to add _____ what the previous speaker said.

12. The house has been added _____ over the years.

13. Add _____ the quality of the room.

14. His numbers add _____ exactly 100.

15. It all adds _____ a total of £300,000.

16. We numbered _____ 20 of us in the group.

17. All the costs add _____ £250.

18. Now that I know the whole story, it's all beginning to add _____ .

19. If two or more numbers add _____ , they make a larger number.

20. I never could add _____ .

21. I needed to use a calculator to add _____ the bill.

22. All in all, it adds _____ a pretty hopeless situation.

23. You must strictly adhere _____ this view.

24. I admit _____ being a little surprised at his answer.

25. He admitted _____ having taken the money.