Выберите правильный вариант глагола 1. Last summer we visited / have visited all the interesting places in the region. 2. There are foot prints everywhere! Someone came / has come here! 3. It is an interesting book, I have read / read it. 4. They are not in the city, they moved / have moved to the country for the summer. 5. Mr Brown has changed / changed his job last year. 6. When did you go / have you gone to France? 7. I never watched / have never watched this film. 8. They watched / have watched an interesting movie a week ago. 9. Last winter she has sold / sold her flat and went / have gone to live abroad. 10. She broke / has broken her leg in the childhood.

Загрязнение окружающей среды. 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.