39. A. before                       B. after                        C. until                        D. since

38. A. unlocked                   B.shut                         C. broke                             D. knocked

37. A. see                                   B. feel                         C. taste                        D. smell

36. A. fast                           B. slowly                      C. safely               D. well

35. A. on fire                             B. in trouble                C. in danger                 D. on sale

34. A. neighbor                   B. receiver                   C. worker                            D. speaker

33. A. instead                             B. later                        C. then                       D. ago

32. A. moved                             B. pushed                   C. wound                     D. felt

31. A. set up                       B. put up                     C. picked up                D. took up

30. A. left                           B. stayed                     C. talked                      D. chatted