1. In order to develop mathematical sciences N. I. Lobachevsky made
extensive researches in this field.
2. He phoned her yesterday to organize the meeting because there were
problems.
3. Carbon is used to make the physical qualities of the metal better.
4. To prepare metals for practical use requires much knowledge and
experience.
5. They discovered ways to refine metals.
1. В целях развития математических наук Н. И. Лобачевский осуществил широкие исследования в этой области.
2. Он позвонил ей вчера, чтобы организовать встречу, потому что с этим проблемы.
3. Углерод используется для улучшения физических качеств металла.
4. Для подготовки металлов к практическому использованию требуется много знаний и опыта.
5. Они открыли способы очистки металлов.
1.doesn't
2.play
3.don't
4 .don't
5. isn't
6 .doesn't
7.sings
8. can
9. lives
10. loves
11. can
12. can
13. don't
2.
1. a
2. b
3. a
4. b
5. c
6. b
7. a
8. b
9. c
10. a
11. b
3.
1. When have you seen a new film?
2. How long has Linda been watching TV?
3. Where is he?
4. What was the weather yesterday?
5. Why did he have to borrow any money?
4.
1. The car was driven by a young woman
2. He wears shorts when he plays football
3. She went to London by train yesterday
Victoria - she
Mike - he
Nick and Sue - they
Lena and I - they
Cats meow softly.They like eating milk and meat.
Sheep baa happily.they like eating grass.
Horses neigh noisily.they like eating grass.
Hens cluck slowly.They like eating corn.
Roosters crow noisily.they like eating corn
Turkeys gobble loudly.they like eating corn
Donkeys bray loudly.they like eating grass
Cows moe noisily.they like eating grass
Goats bleat happily .they like eating grass
Geese honk noisily.they like eating corn and grass
Ducks quack softly.they like eating corn and grass
Pigs oink noisily.they like eating corn,grass,vegetables and fruits