1. When I (get) some details I wrote a plan and began creating my future. 2. It was a nasty day. The sky was dark, it (rain 3. Thanks for your lectures; I (rewrite) them, now you can take them back. 4. They gave us … phone numbers and we gave them … (they/we) 5. People (get) more clean air if they (plant) more trees. 6. If he (not come), they (not stay) at home. 7. The flowers (are bought/were bought/will be bought) two days ago. 8. I (ask/am asked, will ask) by my teachers every day. 9. The streets in the city are (wide) than in the country. 10. Your flat is (far) than mine. 11. The girl (play) with your friend is my sister. 12. The film (watch) yesterday is interesting.

Ecological problems are becoming more and more important today. People all over the world discuss environment pollution, but we still go on polluting air, water and soil. Air pollution is the biggest problem of large cities and industrial areas. It usually caused by different means of transport. Cars, buses and planes are among the worst air polluters. Factories throw rubbish in the rivers. As result trees and plants are poisoned so in one moment they will die. If we lose tropical forests it will become more difficult to breathe because they provide 50 per cent of the world's annual production of oxygen. Also, trees are threatened not only by pollution but by people. You should remember that when you throw something, it can eventually end up in a river. There is a way to reduce pollution from cars by using electric cars. We must not ignore the problems of pollution, and we have to try to make everything possible to stop or at least reduce the pollution.

Environmental problems have become one of the most urgent problems of modern society. More and more people suffer from air and water pollution. Nature also suffers from land and nuclear pollution. The reasons for such environmental problems are numerous. Among them increasing number of cars in the streets, factory waste, millions of cut down trees, destroyed habitats of animals, contaminated rivers and seas. All these problems mainly arise due to human careless activities and gradually destroy our planet. If we look closely, we’ll notice that not only one city is under danger, but the majority of world population. Fortunately, there are many ways to suspend these problems. If everybody starts caring about the planet we live on, many environmental problems can be solved. For example, if we start recycling paper and cardboard, we can save lots of trees. If we start using public transport more than private cars, we can have less air pollution. Local governments can also help to prevent some problems, if they forbid logging companies to destroy the forests, or stop factories from polluting water. The most important thing is, of course, to start acting immediately, otherwise we might have to face many global disasters.