Waterless planet? water is the world's … (1) precious resource. people can survive for quite a long time … (2) food but can only live for a … (3) days without water. it is very important then that we take care of our rivers, lakes, and streams. the problem is that while populations keep rising the amount of fresh water in the world stays the same. … (4) 1950, water use has tripled. experts predict that by the year 2025, two thirds of the world’s population will suffer water shortages. there is also the problem of keeping our water … (5) to drink. many of our rivers and lakes are … (6) with chemicals and industrial waste from factories. luckily, we can all take steps to … (7) our water supply from danger. first, we should try not to waste water at home. turning the tap off when we brush our teeth, fixing leaky pipes and taking … (8) instead of baths are all things we can do to help. factories can stop dumping their waste in rivers by … (9) it. farmers would waste 25% less water if they … (10) new technology for watering their fields.вставити слова without few since most safe protect showers polluted recycling used

1)It was nice to watch the children listen to music.

2)The noise behind my back made me look around, I saw a man who was waving his hand and shouting something.

3. Can't you see that he wants you to help him?

4. I would not like you to think badly of him. We have always known him as a very honest person.

5. I have never heard him mention that name.

6. Do not allow children to watch TV until late. This is bad for their health.

7. I like to have windows facing south.

8. Let me give you some advice.

9. They felt it was time for them to leave.

10. Suddenly she felt someone lightly touch her shoulder.

11. I noticed the taxi slowed down and stopped at a street corner.

12. He always does what you want.

13. He knew this book was interesting, but he did not expect it to be so interesting.

14. I heard he is working on a new book now. Do you know what it is about?

Объяснение:

Present Perfect:

I have done my homework already.

He hasn't done his homework yet.

I have never met such a nice person.

Present Simple:

I go to school every morning.

We usualy have tea after breakfast.

She works as a shop assistant.

Present Continuous:

I am listening to music now.

We are watching TV right now.

Peter is playing football now.

Past Simple:

I saw him yesterday.

They painted the house two years ago.

Nick visited his grandmother last week.

Past Continuous:

I was playing tennis when he called me.

She was writing a letter yesterday at 5 o'clock.

We were cooking dinner when he came

Объяснение: