73. It’s not easy to w ______ out these math problems.

72. Basketball is my ___________(最喜爱的)sport.

71. Could you s_______ me the way to the post office?

70. Have you ever s_________ the movie The King’s Speech?

69. We should speak to others _________ (礼貌地).

68.Trees can keep water from 　　　　　(run)away.

67. My father works in h______, he helps sick people to get fine.

66. The dictionary isn’t ________. It belongs to Mary.

B)用所给词的正确形式填空，每空限填一词。

65. It’s ________ hard. We can’t go out to play basketball..

64. Who is the ________　 of the backpack?