52. A. point B. view C. problem D. difficulty
51. A. stops B. appears C. starts D. continues
50. A. what B. how C. when D. where
49. A. used to B. seemed to C. had to D. happened to
48. A. capital B. meaning C. design D. change
47. A. old B. C. first D. present
46. A. helps B. tricks C. fails D.
45. A. one B. more C. other D. such
44. A. open B. C. begin D. move
43. A. of B. for C. like D.
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