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54. A. do             B. did            C. had            D. were

53. A. forget          B. remember       C. tell            D. believe

52. A. Next           B. Last            C. Then          D. When

51. A. quickly         B. carefully        C. finally         D. bravely

50. A. go into          B. go down       C. take off        D. jump into

49. A. a little          B. such           C. a bit           D. very

48. A. enjoyed         B. helped         C. changed        D. dressed

47. A. lucky           B. only           C. happy         D. younger

46. A. Instead         B. For            C. Unless         D. Sometimes

45. A. talk about       B. speak out       C. think over       D. shout at