31. A.discovered B. destroyed C. developed D. opened
32. A. repaired B. invented C. wounded D. succeeded
33. A. improved B. parked C. broadened D. encouraged
34. A. delivered B. organized C. replaced D. obeyed
35. A. painted B. provided C. protected D. equipped
36. A. tested B. marked C. presented D. founded
37. A. used B. finished C. married D. rained
38. A. allowed B. dressed C. flashed D. mixed
39. A. switched B. stayed C. believed D. cleared
40. A.recommended B. waited C. handed D. designed
41. A. annoyed B. phoned C. watched D.remembered
42. A. hurried B. decided C. planned D. wondered
43. A. posted B. added C. managed D. arrested
44. A. dreamed B. neglected C. denied D. admired
45. A. admitted B. advanced C. appointed D. competed
46. A. announced B. apologized C. answered D. argued
47. A. complained B. applied C. compared D. polished
48. A. booked B. watched C. jogged D. developed
49. A. contributed B. jumped C. introduced D. vanished
50. A. whispered B. wandered C. sympathized D. sentenced

31. C

32. A

33. B

34. C

35. D

36. B

37. D

38. A

39. A

40. D

41. C

42. B

43. C

44. B

45. B

46. A

47. C

48. A

50. D