1. 21. Will and Shall 1 21분

2. 22. Will and Shall 2 22분

3. 23. I will and I’m going to 18분

4. 24. Will be doing and will have done 18분

5. 25. When I do and when I’ve done / if and when 21분

6. 26. Can, Could and (be) able to 26분

7. 27. Could (do) and could have (done) 20분

8. 28. must and can’t 20분

9. 29. may and might 1 23분

10. 30. may and might 2 23분

11. 31. have to and must 28분

12. 32. Must mustn’t needn’t 25분

13. 33. Should 1 23분

14. 34. Should 2 27분

15. 35. I’d better… it’s time… 27분

16. 36. would 28분

17. 37. can / could / would you…? 26분

18. 38. if I do… and if I did… 23분

19. 39. if I knew… I wish I knew… 24분

20. 40. if I had known… I wish I had known… 25분