4а и 4b не надо , мне нужен номер 3 , и 5 который после 4b

The poisoning of the world's land, air, and water is the fastest-spreading disease of civilisation. it probably produces fewer headlines than wars, earthquakes and floods, but it is potentially one of history's greatest dangers to human life on earth. if present trends continue for the next several decades, our planet will become uninhabitable.overpopulation, pollution and energy consumption have created such planet-wide problems as massive deforestation, ozone depletion, acid rains and the global warming that is believed to be coused by the greenhouse effect.the seas are in danger. they are filled with poison: industrial and nuclear waste, chemical fertilisers and pesticides. the mediterranean is already nearly dead; the north sea is following. the aral sea is on the brink of extinction. if nothing is done about it, one day nothing will be able to live in the seas.

1. I live and work in Moscow.
2. I'm going to London tomorrow. I often go to London for business.
3. He doesn't often go abroad. His office is in Switzerland.
4. He is waiting for me at the exit.
5. Are you flying to Lisbon?
6. Your plane leaves at a quarter to seven.
7. Mr. Brown is arriving in Moscow at 2 o'clock. My friends are meeting him at the airport.
8. It is difficult for me to understand him.
9. Listen to them. They are speaking English.
10. Where is Mr. Green? He is in his office.
11. Have you got a reservation for my name?
12. You can fill in this form in Russian.
13. They informed us about the name of the hotel.
14. They talked about business.
15. They are doing good business with many European companies.