Збекистон республикаси олий ва ўрта махсус таълим вазирлиги

I have been working in a factory for two years.
She is learning to drive. (last December)
She has been learning to drive since last December.
1.He is writing some letters, (two hours)
2.I live in Istanbul. (I was born)
3.It is raining, (yesterday)
4.He teaches English, (five years)
5.She is doing the washing, (two hours)
6.They are talking about economy, (nine o'clock)
7.He builds houses, (a long time)
8.They are playing football, (half an hour)
9.He is learning English, (six months)
10.We are waiting for the bus. (fifteen minutes)
11. Ali is studying chemistry, (last September)
12.She is wearing glasses. (1986)
13.They are standing in front of the gate. (10.30)
14.He doesn't smoke, (five days)
15.The baby is sleeping, (last night)
16. I am looking for my dictionary, (a few weeks)
17. He drinks a lot (his wife died).
18. She is doing the crossword puzzle, (half an hour)
19. He doesn't feel very well, (last week)
20. They repair cars, (fifteen years)
21. They are talking (two hours)
22. She is sleeping (nine o'clock)
23. He is fixing the TV (more than an hour)
24. He is eating (fifteen minutes)


Exercise 4. Translate the text without a dictionary, entitle it and formulate the main idea in one sentence:
Man has been engaged in breeding and selecting plants and animals for thousands of years. During that time he has been able to develop a great many varieties. Breeders are always anxious to increase production. They try to get more and better varieties of berries from each bush, more milk per cow, and more eggs per chicken. In many cases, the breeder has found it possible to develop new varieties that resist high or low temperature and diseases. They use three chief methods in the effort to increase quality and production. These are selection, cross breeding and the use of mutations. The breeder tries most of all to understand the heredity of the animals and plants with which he works. He carries out many experiments to learn about the genes and how they are inherited. Then he tries to get a combination of genes that will give him the qualities he desires. Such experiments may be long, difficult and costly.