1.was 13. are
 2.was 14. is
 3. is 15. were
 4. were 16. was
 5. was 17. was          were
 6. is 18. was           is
 7. is 19. isn't           ins't
 8. is          is  20. are
 9. are 21. is
10. is         is  22. were
11. was 23. is 
12. are 24. are           were