4. Виконання граматичних вправ . Present Perfect.

Ex 4. Open the brackets using the verbs in Present Perfect or Past Simple.

1. Look at my new dress! I (to make) it myself. 2. When you (to see) Mary? — I (to see) her last week. 3. He is not at school today, he (to fall) ill. — When he (to fall) ill? — He (to fall) ill yesterday. 4. Look at this bird-house. Mike (to make) it himself. He (to make) it last Sunday. 5. He (to go) already? 6. When you (to see) him last? 7. I (not to see) him for ages. 8. His health (to improve) greatly since I (to see) him last. 9. Last night I (to feel) tired and (to go) to bed very early. 10. Where you (to spend) your holidays? 11. At last I (to do) all my homework: now I shall go out. 12. The building of the house (to begin) early in April. 13. The rain (to stop) but a cold wind is still blowing. 14. We already (to solve) the problem. 15. He (to come) a moment ago. 16. I never (to speak) to him. 17. He just (to finish) his work. 18. You (to make) any spelling mistakes in your dictation? 19. You (to see) Mary today? 20. You (to be) in the Caucasus last year? 21. Your mother (to promise) to take you to the theatre? 22. Не (to be) abroad five years ago. 23. They (to leave) England when he (to be) still a child.

5. Робота над текстом за профілем спрямування: The environment and Homo sapiens

When the first astronauts circled the earth in their tiny craft, millions of listeners heard them describe the beauty of this planet "like a blue pearl in space", and were caught up in a moment of extraordinary human revelation.

We all worry about World War III and the possibility of it being a nuclear war. But we are already engaged in World War III, to para­phrase Professor Raymond Dasmann of the University of California, a war against our Earth — and we are winning it.

Every species other than Homo sapiens adapts its form and behaviour to the pressures of its environment. Homo sapiens, on the contrary has achieved he remarkable feat of being able to adapt the environment instead, overcoming many natural limitations, through the development of technologies and cultures. If we do not learn to live in harmony with our environment, we shall experience the laws of nature in full force. While nuclear war could readily kill two billion people, at least as many could die through freezing and starvation.

Environmental degradation is like a cancer, or many forms of cancer, spreading silently, unseen, through the body of our planet. If it were like a heart attack, its effect would be all too apparent, and we would swiftly take steps to remedy the problem. But it isn't and we don't. At the present rate of "progress", and unless something is done quickly, disaster stares us in the face. Erosion, desertification and pollution have become our lot.

Our silly behaviour causes great damage not only to our planet, but also to ourselves as such. Environmental changes are often the rea­son of many incurable illnesses, mental disorders, the stress we ex­perience.