61weknow,whenseniorstudentsfinishschool,mostoftheirrefe...

问题详情：

61 we know, when senior students finish school, most of their reference books  _ 62__ (throw) away, which are still in good condition.  63a great waste it is! I suggest that students should recycle all these books. On the one hand, recycling them can savea lot of natural resources,   64are used to make textbooks. On the other hand, the notes in the books are helpful to   65needs them.

In fact, recycling textbooks has been   66 (increase) popular in 　67__ countries as America and Australia. We should learn 　68 them, and make every effort 　69　(build) an energy-saving society. In my opinion, it is 70  (benefit) to our present and our future.

【回答】

61. As   62. Are thrown  63. What  64. which  65. whoever  66. increasingly

67. such  68. from  69. to build  70. beneficial

知识点：语法填空

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