When we climbed up to the top of the mountain, we were all __________ ,but we were very happy. 

Three years ago，a society was set up to________the endangered animal and plant life from dying out in this area.

I am addicted to computers. I spend most of my time ________ the Internet.

Miss Smith often says “God helps those who help themselves”, intending to________ on us the significance of being independence.

Generally speaking, the family, not the school, plays the       role in educating children for life.