54. They escaped to France for a ______ political reason.

A. some　 B. certain　 C. sure 　D. any

53. It's ______ that our team will win the game.

A. exact　 B. right　 C. sure　 D. certain

52. Some people are always curious ______ what others do.

A. in　 B. of　 C. with　 D. about

51. It is well known that Thomas Edison ______ the electric lamp.

A. invented　 B. discovered　 C. found　 D. developed

50. All the street were ______ with flags to welcome the Chinese delegation.

A. furnished　 B. decorated　 C. supplied　 D. provide

49. --- How do you find the film?

--- It's beyond ______.

A. describe　　 B. description C. reach　 D. descriptive

48. _____ of the reasons was true.

A. None　 B. No one　 C. Nothing　 D. All

47. Our cook has _____ the family for 20 years.

A. served　 B. served in　 C. served on　 D. served as

46. Whom _____ the bike _____?

A. does; belong to　　　 B. does; belong

C. is; belong to　 　　 D. is; belong to

45. Our teacher _____ us has been to the Great Wall.

A. and　 B. as well as　 C.or　 D. as well