1. It is on the table. 2. She often sends Ben to buy milk. 3. Are they ready to do the work? 4. They spend them at the seaside. 5. He is in the park. 6. They are not at work now. 7. We are good friends. 8. Is he at the lesson now? 9. Where is it? 10. They are on the table. 11. He is in the garden with her. 12. They are always glad to see us. 13. We are good football players. 14. She knows him. 15. I see it very well. 16. They have lectures every day. 17. He plays it every Sunday. 18. He/she asks them. 19. They write them every week. 20. Look at it! 21. I have it at home. 22. Max wants to speak to her.
Large cities with thousands of smoky industrial enterprises appear all over the world today. They pollute the air we breathe, the water we drink, the land we live in. Many cities suffer from smog. Vast forests are cut and burnt in fire.
As a result, some rare species of animals, birds, fish and plants disappear forever, a number of rivers and lakes dry up.
Environmental protection is a universal concern. That is why serious measures to create a system of ecological security should be taken.
The accident at the Chernobyl nuclear power plant in April 1986 caused radioactive pollution of a vast area. Who knows what possible effects on health or longer-term genetic effects this pollution may have.
The international organization Greenpeace is also doing much to preserve the environment.
The Earth is our home. We must take care of it for ourselves and next generations.