We don’t realize how lucky we are to have clean water whenever we want. A lot of people around the world do not have such an opportunity. Did you know that more than 750 million people on the Earth do not have clean water to drink? Meanwhile, a lot of water is wasted and polluted. In 1993 the United Nations decided to celebrate the World Day for Water. Nowadays a lot of special events are organized in different countries. Their aim is to make people understand how important clean water is for their health, environment and agriculture. Water is essential for our life. We should think about saving it, as the fresh water supplies are limited. We need to keep it clean for ourselves and for future generations.
1. Do all people in the world have clean water?
2. When did the United Nations decide to celebrate the World Day for Water?
3. Why do people celebrate the World Day for Water?

I had read the book before I gave it to my friend. (Я прочитал книгу прежде, чем дал её другу)

I went for a walk after I had done the work. (Я пошёл гулять после того, как сделал работу.)

They had been at home by 6 o'clock yesterday. (Они были дома к 6 часам вчера.)

He had corrected the programme before he went home. (Он исправил программу, прежде чем он пошел домой.)

I sent the letter after I had written it. (Я отправил письмо после того, как написал его.)

I had read the text before I began to translate it. (Я прочитал текст, прежде чем начал переводить его.)

1.Ivan said he didn't hear me playing the piano in the flat above.

2. Herry said to her younger brother Tom that if she was late he would stay with aunt Igor.

3.The boys said their parents were late that day.

4.The correspondent explained that two criminals in black clothes had broken into the local bank some days before.

5.Nikolay said to his friend Viktor that he was going to stay in a hotel when he was in Paris'.

6.Lavanda said to her brother Fred that he might take their album and pencils and draw.