С. complete the sentences with tag questions and answer the. 1)you take care of your 2)you don't hunt birds and 3)a healthy way of life is not only good food 4)you do 5)you don't like to wake up

1) aren’t you
2) do you
3) is it
4) don’t you
5) do you

ответы на вопросы:
1) I surely do take care of my health
2) I certainly don’t hunt birds and animals
3) Of course it is not, but good food is also quite important
4) I do sports, but not that often
5) I don’t like to wake up early, I prefer to have a long sleep

1) If you heat water, it boils.. 
2. If people don't eat or drink, eventually they die. 
3. If I am late, my father takes me to school.. 
4. If you have a toothache, you visit the dentist. t
5. When factories use fossil fuels, it produces greenhouse gases
6. When you burn oil, the greenhouse effect gets worse.
7. When people cut down trees, it is deforestation 
8. When icebergs melt, the sea level rises
9. If you use air conditioning wisely, you save up energy
10. If people don’t protect animals, they become extinct

номер 2
1. If I won the lottery, I would travel around the world.
2. If I were in Brazil, I would go to Rio de Janeiro.
3. They wouldn’t work any more if they won the lottery. 
4. We could go out if it didn’t rain
5. What would you do if you were me?
6. I wouldn’t do that If I were you 

Номер 3
Type O Conditional
If the sun (rises) high, it (becomes) very hot.
Plants (die), if it (doesn't ) not rain.
People (get) fat, if they (eat) junk food.
If a person (practises) sports, he or she always  (feels) good.

Type 1 Conditional
If you (cook) the supper, I(will wash) the dishes.
She (will pass) the test if she(studies) hard.
If it  (is) sunny, we (will go) to the park.
Paula (will be) sad if Juan (leaves.)

Type 2 Conditional
If I (had) a million dollars, I(would buy)a big house.
If dogs (had) wings, they (would be) able to fly.
If I (were) you, I (would drive) more carefully in the rain.
Paula  (would be) sad if Jan (left).

1. My father is writing a letter now. Is my father writing a letter now? My father isn't writing a letter now. 2. My sister is playing the piano at the moment. Is my sister playing the piano at the moment? My sister isn't playing the piano at the moment. 3. They are reading an interesting book now. Are they reading an interesting book now? They aren't reading an interesting book now. 4. You are having breakfast now. Are you having breakfast now? You aren't having breakfast now. 5. She is helping her mother now. Is she helping her mother now? She isn't helping her mother now. 6. My brother is playing computer games now. Is my brother playing computer games now? My brother isn't playing computer games now. 7. My grandma is opening the window now. Is my grandma opening the window now? My grandma isn't opening the window now. 8. The girls are singing in the classroom at the moment. Are the girls singing in the classroom at the moment? The girls are not singing in the classroom at the moment. 9. My friend is listening to music now. Is my friend listening music now? My friend isn't listening to music now. 10. She is doing her homework now. Is she doing her homework now? She isn't doing her homework now.