作为一名中学生，你学习的课程一定很多，学习压力很大，通常都是通过参加一些课外活动来调节的。你最喜欢哪一项活动？

80. Let us __　 _____ (drink) some orange juice.

79. I think he needs ___　 ____ (answer) the questions.

78. They can watch ____　 ___ (they) on TV.

77. He cut _____　 __ (he) by the broken glass.

76. Mary would like ___　 ____ (clean) the windows.

75. His parents enjoyed ____　 ___ (take) photos.

74. How many ____　 ___ (dictionary) did you buy last year?

73. He hoped ___　 ____ (see) his mother.