. Put questions to the following sentences. 1. He will be busy with his research work. (general)
2. The scientists obtained new laboratory equipment. (What)
3. You must switch on the apparatus in time. (When)
4. We were taught how to handle these instruments. (Who)
5. The students have to study a lot of material. (Why)

3. Open the brackets.
1. The engine (not to function). It must (to repair).
2. We (to repeat) the experiment next month.
3. Our engineers (to put) the engine in motion yesterday.
4. They (to report) on the results of their observations by 10 o’clock
tomorrow.
5. This area (to explore) by the scientists for several months last year

Держи:

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).

Объяснение:

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