38. A. behave                       B. manage                    C. help                  D. work

39. A. pushing                            B. carrying                   C. buying                     D. holding

40. A. goods                        B. bottles                      C. foods                D. bags

41. A. excited                      B. determined               C. energetic           D. grateful

42. A. since                         B. unless                      C. although            D. as

43. A. sound                        B. get                           C. feel                   D. look

44. A. exchange                   B. leave                        C. keep                 D. spread

45. A. sell                            B. deliver                            C. host                  D. pack

46. A. contribute                  B. lead                         C. apply                D. agree

47. A. campaign                   B. trip                          C. procedure          D. trial

48. A. elderly                       B. hungry                     C. lonely               D. sick

49. A. aware                        B. afraid                       C. proud                D. sure

50 A. going                         B. sleeping                   C. traveling       &n