1 I am a member of the anti-pollution program in my school so I often go to school by bus.
2 Public facilities would be constructed because of having cleaned off the streets in this area.
3 Fresh, clean water is very important to life since no one can live long without it.
4 Kim’s mother is complaining because she never cleans her room.
5 Many aquatic animals are dead because of water pollution.

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16. I am a member of the anti-pollution program in my school, so I often go to school by bus.
17. The trees in this area were cleared off because of the construction of public facilities.
18. Fresh,clean water is very important to life since no one can live long without it.
19. Because Kim never cleans her room, her mother is complaining.
20. Many aquatic animals are dead due to the polluted water.