1. A number of --- many/ a lot of

2. A great deal of ---a lot of

3. A great many --- al lot of

4. A great variety of ----- many kinds of

5. A variety of --- many kind of

6. Abundant---sufficient---ample---enough

7. A small sum of ---little money

8. Adequate --- enough

9. A majority of --- most of

10. Approximately – almost

11. Above all --- the most important thing

12. accelerate --- increase

13. Accuse sb of doin ---- charge sb with doin

14. Acquire---gain/ obtain

15. Acquaintance ---friend /company

16. …are highly condemned ---- people criticize．． Badly

17. advocate---call for

18. adversity--- hardship

19. afford to--- can pay for

20. attribute to --- because of

21. Assailed by --- troubled by

22. Anticipate---foresee/ predict/foretell

23. Appeal to sb ---fascinate sb/ attract sb

24. appeal to---call for

25. arise from---originate from