31. A. one another                  B. other                      C. another

30. A. going                       B. to go                    C. go

29. A. difficult                                B. favorite                   C. important

28. A. more                        B. less                      C. much

27. A. like                         B. don’t like                 C. never like

26. A. as                           B. than                            C. so