:put the verbs in brackets in the right form. 1.what's that noise? that 's tim. (practise) his dance routine for tomorrow' s competition. /ever/see) a white tiger? yes. (see) one when (visit) the berlin zoo. 3.the browns ) their holidays at the seaside but last summer (decide) to visit the himalayas. 4.a: you (be) in new york? b: .. no, never.. (be) there. i am not sure, but l hope l.. (go) there in few years. 5.a: are you ready to order? b: yes. (have) pizza with double cheese, ham and mushrooms, and a glass of diet coke. 6.a: look at the cat! (fall) from the tree. b: don't worry! (catch) it. 7.) his books when l was at school. (enjoy) them very much. 8.when mary.. (run) down the hill (break) her left arm. 9.l (go) to work by car. 10.are you (want) somethings to eat?

1 what's that noise? That's Tom . He is practising his dance routine for tomorrow 's competition.
2 Have you ever seen a white tiger? Yes, I saw one when I visited the Berlin Zoo.
3 The Browns usually spend their holidays at the seaside but last summer they decided to visit the Himalayas
4 Have you ever been to New York? No, I have never been there. I am not sure , but I hope I will go there in few years.
5 Are you ready to order? Yes, I will have Pizza with double cheese , ham and mushrooms, and a glass of diet Coke.
6 Look at the cat ! It is going to fall from the tree. Don't worry! I will catch it.
7 I read his books when I was at school. I enjoyed them very much.
8 When Mary ran down the hill she broke her left arm.
9 I usually go to work by car.
10 Are you hungry? Do you want something to eat?

Environmental problems have become one of the most urgent problems of modern society. More and more people suffer from air and water pollution. Nature also suffers from land and nuclear pollution. The reasons for such environmental problems are numerous. Among them increasing number of cars in the streets, factory waste, millions of cut down trees, destroyed habitats of animals, contaminated rivers and seas. All these problems mainly arise due to human careless activities and gradually destroy our planet. If we look closely, we’ll notice that not only one city is under danger, but the majority of world population. Fortunately, there are many ways to suspend these problems. If everybody starts caring about the planet we live on, many environmental problems can be solved. For example, if we start recycling paper and cardboard, we can save lots of trees. If we start using public transport more than private cars, we can have less air pollution. Local governments can also help to prevent some problems, if they forbid logging companies to destroy the forests, or stop factories from polluting water. The most important thing is, of course, to start acting immediately, otherwise we might have to face many global disasters

1. We are very busy now. We are discussing a very important question.
2. Where is Peter? Is he having his English lesson now? — No, he will have his English tomorrow.
Я Where is Susan? — She is working in the library at the moment. She will stop working in an hour.
I What were children  doing when you  came home yester­day? — They were playing in their room.
H. At two o’clock tomorrow we are taking our French lesson.
Λ This problem is too difficult to discuss it now. I  think we will discuss it tomorrow, when we will have more time.
ί I le spent last week in a hospital. He was ill.
Я. Why didn't you  put your coat on yesterday? It was) cold.
9 I le wasn't eating when I  came yesterday. He was reading a book.
10. As a rule he translates two articles a week. But he  translated three articles last week.
11. She didn't see me when I  came into the room. She was reading at that moment.
12. We will be waiting for them at two o’clock tomorrow. We are sure they will come in time.
13. My friends were walking when it began raining.
14. Tomorrow he will be still  working when I come home.
15. Yesterday I  returned home at eight o’clock: it was geting dark and was raining at the time.
16. I cut my finger when I peeling an apple.
17. Let’s go to the cinema when the lessons are over.1
8. He  became  furious when he understood that he·· was late.
19. If she doesn't come tomorrow, ring her up.