At the same time there is a little water on the planet. In many lakes and rivers the water is very dirty. Sometimes people cant swim in seas, rivers and lakes because water is dirty. In many places water is not able to drink and it is dangerous to use it when you cook. Even fish die in such water.Some peoples activities do a lot of harm to the forests. People cut down trees to build farms, homes and roads. Many animals and plants lose their homes. Many of them die. This is bad for the air of the Earth too. Modern plants and factories send a lot of smoke in the atmosphere. This is very bad, because nowadays its difficult to breathe in big cities.
1) The children are in the yard. They have been playing hide-and-seek since breakfast time.
2) Barbara has been doing her make-up for half an hour but hasn't finished it yet.
3) Nice to meet you. I haven't seen you for a long time.
4) We have heard nothing of him for two years (без двойного отриц.)
5) She is a well-known artist. She has been drawing since her childhood
6) She has always liked cats. And now she has three at home.
7) Is Tom still ill? No. He has just recovered
8) Have you sent them the contract yet?
9) I have been translating this story since morning, but still can't understand some sentences.
10) Ben hasn't been doing his homework all this time. He has been playing computer games.
11) You look upset. What has happened to you?
12) "Sorry, I'm late" - "That's all right. I have not been waiting long."
Объяснение:
