Объяснение к каждому написанному мною варианту ответа. n1 choose the right form to complete the sentences last year i bought six (pairs / pieces) of beautiful christmas socks. (this /these) trousers (is /are) too short for me. please (say / tell) the truth, i want to know everything. are you proud (to / of / about) your school? never talk (into / over / back) to me again! if you (come / will come) tomorrow, you (see / will see) jane. our classes are (of / back / over we can go home. it (happen / happened) two years ago. n2 put the verbs in brackets in the past simple or in the present perfect. 1.she (change) a lot since she left school. 2. i (see) this film and i don’t want to see it again. 3. jazz (originate) in the united states around 1900. 4. tom hanks (win) an oscar several times already. 5. long ago, they (build) most houses out of wood. 6. scientists still (not/find) a cure for cancer. 7. sean (eat, never) chinese food before. 8. in my first job, i (be) responsible for marketing. 9. the last job i (apply) for required applicants to speak some japanese. 10. the first modern olympics (take) place in athens more than a hundred years ago. 11. i am writing in connection with the advertisement which (appear) in december.

N1.
1. Pairs;
2. These/ are;
3. Tell;
4. Of;
5. Back;
6. Come/will see
7. Over;
8. Happened

N2.
1. Has changed
2. Have seen
3. Originated
4. Has won
5. Built
6. Haven’t found
7. Has never eaten
8. Was
9. Applied
10. Took
11. Appeared

He said to come quickly. He asked if I had arrived before even. I asked how his holidyay had been. She said that she would had visited the hospital if she had known I had been sick. I said not to touch. She said that she would see Mary on Sunday. She said that Pete and Mary were getting merried the following day. She said that Stephan was bringing some records to the party the following day.
She said that she really liked that furniture. She said that her parents were arriving the following day. 

Ну могу но он не большой
Environmental Protection

Some hundreds of years ago people lived in harmony with nature, because industry was not much developed. Today, however, the contradictions between man and nature are dramatic.

The twenty first century is a century of the scientific and technological progress. The achievements of the mankind in mechanization and automation of industrial processes, in chemical industry and conquering outer space, in the creation of atomic power stations and ships are amazing. But at the same time, this progress gave birth to a very serious problem – the problem of environment.

Ecology and the contamination of environment, is concerned with climate, over-population in certain areas, deaths of plant and animals, chemical contamination of seas, lakes and rivers as well as atomic experiments and dumping of atomic waste from power stations. Floods, unexpected draughts, and the greenhouse effect are the next reasons.

There are many consequences of damaging the environment. One of them is acid rain. Another one is water shortage resulting from abuse of arable lands in agriculture. The third one is destroying the ozone layer of the Earth through pollution from factories and plants. The fourth problem is damage o water and soils.

The fifth one is damage to wildlife: numerous species of animals and plants can disappear. At last, the most serious danger arising from damaging the environment is the result of the abovementioned consequences. This is the danger for the life and health of the man.

The protection of natural resources and wildlife is becoming a political programme in every country. Numerous anti-pollution acts passed in different countries led to considerable improvements in environment. In many countries purifying systems for treatment of industrial waters have been installed, measures have been taken to protect rivers and seas from oil waters.

But the environmental problems have grown beyond the concern of a single country. Their solution requires the co-operation of all nations. If we are unable to learn to use the environment carefully and protect it from damage caused by man’s activities, very soon we’ll have no world to live in.

Environmental protection is a practice of protecting the environment, on individual, organizational or governmental level, for the benefit of the natural environment and (or) humans. Due to the pressures of population and our technology the biophysical environment is being degraded, sometimes permanently.

This has been recognized and governments began placing restraints on activities that caused environmental degradation. Since the 1960s activism by the environmental movement has created awareness of the various environmental issues. There is not a full agreement on the extent of the environmental impact of human activity and protection measures are occasionally criticized.

Academic institutions now offer courses such as environmental studies, environmental management and environmental engineering that study the history and methods of environmental protection. Protection of the environment is needed from various human activities. Waste, pollution, loss of biodiversity, and the introduction of invasive species are some of the issues relating to environmental protection.