1. i (not to drink) coffee now. i (to write) an english exercise. 2. i (not to drink) coffee in the evening. i (to drink) coffee in the morning. 3. your friend (to do) his homework now? 4. your friend (to go) to school in the morning? 5. look! the baby (to sleep 6. the baby always (to sleep) after dinner. 7. my grandmother (not to work). she is on pension. 8. my father (not to sleep) now. he (to work) in the garden. 9. i usually (to get) up at seven o'clock in the morning. 10. what your sis¬ter (to do) now? - - she (to wash) her face and hands. 11. when you usually (to come) home from school? — i (to come) at three o'clock. 12. where your cousin (to work)? -- he (to work) at a hospi-taj. 13. your sister (to study) at an institute? -no, she (to study) at school. 14. my cousin (to go) to school every day. 15. my mother (not to play) the piano now. she (to play) the piano in the morning.

1. am not drinking; am writing
2. don't drink; drink
3. Is your friend doing
4. Does your friend go
5. is sleeping
6. sleep
7. doesn't work
8. isn't sleeping; is working
9. get
10. is your sister doing; is washing
11. do you usually come; come
12. does your cousin work; works
13. does your sister study; studies
14. goes
15. isn't playing; plays

At the present time the significant changes have been occuring and they are not always positive. Ozone layer protects the earth’s surface from the sun's ultraviolet rays, debilitating the organism's ability to withstand the diseases. It is broken by chlorofluorocarbon, utilizing in aerosol production, in the manufacture of materials for the sterilization of medical equipment and etc. The greenhouse effect and acid rains are the result of burning  of the fossil fuels, disposable by different sources. Mass cutting down  of forests leads to disruption of the process of rotation the oxygen and carbon in the biosphere. Ecological balance is disrupted also by plenty of disposable garbage and water pollution by harmful substances. 

Every year a lot of species of plants and animals have been destroying , forest cover has been exterminating, mineral reserves have been decreasing, the world ocean has been becoming depleted. These losses are incommensurable. 

The global environmental crisis may turn into a catastrophe for the planet in the future. If mankind doesn’t change the way of consumption the natural resources, there will begin famine, deficit of clean water and outburst natural disasters. The environmental crisis is overcame by means of ecological education of all stratum of the society, creation of effective nature conservation legislation, implementation the good scientific and technical solutions, applying the conservation ecology.

There are many old trees in the park
Там есть много старых деревьев в парке
There are children under the trees
Там есть ребята позади дерева
There is a lake on the park
Там есть lake в парке
There are boats on the lake
Там есть Корабли на lake

There are children in the park
There is a cat on the sofa
There are three little balls on the floor

There are bicycles near the tree
There are a books on the table
There are a sweets in the box

Задание 9
When is your birthday
How many cards did you get
What do you like presents
What did your mum