54. A. spent                  B. took                         C. cost                  D. used

53. A. all                      B. each                         C. every                D. either

52. A. down                  B. up                           C. out                   D. in

51. A. reached               B. arrived                            C. became             D. got

50. A. mark                  B. goal                         C. reason               D. result