53. A. chance B. matter C. problem D. time
52. A. me B. Janet C. themselves D. the cot
51. A. smooth B. unchanged C. level D. unmoved
50. A. As B. Because C. Before D. Since
49. A. over B. on C. through D. across
48. A. interesting B. exciting C. dangerous D. safe
47. A. And B. But C. Then D. So
46. A. took B. brought C. lifted D. carded
45. A. sitting B. lying C. kneeling D. standing
44. A. Very B. Too C. So D. Truly