1. Conservation also includes searching_________ alternative fuels, such as the energy of the Sun.
2. These days everybody is aware___________ the dangers of smoking.
3. Clean air provides us__________ a healthy supply of oxygen.
4. When wastes are poured _________ the atmosphere, the air becomes contaminated and
unpleasant to breathe.
5. Some large cities may have to ban cars_________ the city centre to wipe _________ smoke.
6. The fight___________ pollution of our environment is important as well.
7. People used to believe that the world’s natural resources could never be used__________.
8. Conservation is also concerned_________ the reclaiming of land.
9. Protect your child_________ direct sunlight by using a sunscreen.
10. Vehicles account________ air pollution in the city.
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Sinh Học lớp 12
