19. A. at least                B. at most                      C. at times                      D. at hand

20. A. relief                    B. concern                      C. love                             D. curiosity

21. A. pride                    B. happiness                          C. challenge                   D. desire

22. A. which                   B. why                             C. that                             D. what

23. A. effort                   B. offer                           C. promise                     D. profit

24. A. come across       B. look after                   C. depend on                D. laugh at

25. A. instead                B. indeed                        C. aside                           D. apart

26. A. worse                  B. better                        C. less                             D. higher

27. A. relaxing               B. disappointing           C. pleasant                      D. regular

28. A. agents                          B. buyers                         C. managers                   D. owners

29. A. already                B. still                               C. generally                    D. ever

30. A. so                         B. or                                C. for                               D. but

31. A. apologized