The Baikal
The problems of environment are important all over the world. In our country the problem of pollution of Lake Baikal is (real) actual. The most (danger) problem for the lake’s nature is a lot of factories on its shores. Many species of animals and plants die.
We must protect our unique lake against (differ) kinds of pollution. The health of our country and our planet depends on it very much.
II. Выберите правильный вариант косвенной речи.
1. David: "John has already gone at six."

a. David said that John has already gone at six.
b. David said that John had already had gone at six.
c. David said that John had already gone at six.

2. He said:'' I can help you if you want.''
a. He said that he could help me if I want.
b. He said that he could help me if I wanted.
c. He said that he could have helped me if I wanted.
3. Sandy: "Are the boys reading the book?"
a. Sandy asked me if the boys were reading the book.
b. Sandy asked me if the boys are reading the book.
c. Sandy asked me were the boys reading the book.

4. Jamie: "Don't eat so much junk food!"

a. Jamie asked me not to eat so much junk food.
b. Jamie asked me to didn't eat so much junk food.
c. Jamie asked me to eat so much junk food.

5. Stephen to Claire: "We have cleaned the windows."

a. Stephen told Claire that he had cleaned the windows.
b. Stephen told Claire that they had cleaned the windows.
c. Stephen told Claire that they cleaned the windows.

IV. Перепишите предложения в косвенной речи.
1. They said: “We know it.”
2. She said: “My mum is cooking dinner.”
3. Jack said: “I have translated the text.”
4. He told me: “Don’t do that!”
5. She told him: “Close the door.”
6. He asked me: “Why are you crying?”
7. She asked me: “Have you read the book?”

1. I’m trying to study. I have been trying to study for the last hour, but something always seems to interrupt me. I think I’d better go to the library. 

2. The children are playing basketball right now. They have been playing for almost two hours. They must be getting tired. 

3. The telephone has rung four times in the last hour, and each time it has been for my roommate. 

4. The telephone has been ringing for almost a minute. Why doesn’t someone answer it? 

5. It has been raining all day. I wonder when it will stop. 

6. We have had three accidents so far this week. I wonder how many more we will have if you keep using the tools carelessly. 

7. We have been living here since last June. 

8. My little son is dirty from head to foot because he has been playing in the mud. 

9. What’s the matter? Your eyes are red and puffy. I hope you have not cried.  Oh, now I understand. You have been peeling some onions. 

10. Hello, Rob. I’m happy to see you again. I haven't seen  you for weeks. What have you been doing lately? 

11. I haven't been able to reach my boss on the phone yet. I have been trying for the last twenty minutes, but the line has been busy. 

12. We have had three major snowstorms so far this winter. I wonder how many more we will have. 

13. I have written to them three times, but I still haven’t received a reply. 

14. A: Dr. Harrison is a good teacher. How long has he been teaching at the university? B: He has been teaching here for almost 25 years. 15. A: What are you going to order for dinner? B: Well, I have had pizza. So I think, I’ll order that. 

16. My uncle has been painting the outside of his house for three weeks and he’s still not finished. 

17. The Smiths are presently in Tunisia. They have been travelling throughout North Africa since the middle of May. They’ll return home in another month. 

C) Use THE PRESENT PERFECT TENSE or THE PRESENT PERFECT CONTINUOUS  to fill in the blanks: 

1. I’m tired. We have been walking for over an hour. Let’s stop and rest for a while. 

2. The zoo isn’t far from here. I have walked there many times. 

3. I have written to my friends at least a dozen letters since I left home and came home. 

4. Sally is writing a letter to her boyfriend. She has been writing  it since she got home from class. It’s going to be a long letter. 

5. The telephone has rung four times in the last hour, and each time it has been for my roommate. 

6. The telephone has been ringing for almost a minute.  Why doesn’t someone answer it? 

7. She is 80 and she has never read a book in her life. 

8. The secretary is very tired. She has been typing all morning. 

9. Tom is reading a book. He started two hours ago and he is on page 53. He has been reading for two hours. 

10. Hello! I have been cleaning the windows. So far I have cleaned five of them and there are two more to do. 

11. My grandfather died 30 years ago.  I have never met him. 

12. A: Is your father at home? 

B: No, I’m afraid he has gone out. 

A: When exactly did he go out?

B: About ten minutes ago.

Подробнее - на -

1) Their parents will visit you next weekend.

Their parents won't visit you next weekend.

Will their parents visit you next weekend?

2) We go to the cinema twice a month.

We don't go to the cinema twice a month.

Do we go to the cinema twice a month?

3) My dad taught me how to drive a car last year.

My dad didn't teach me how to drive a car last year.

Did my dad teach me how to drive a car last year?

4) The Browns have already moved to the new flat.

The Browns haven't already moved to the new flat.

Have the Browns already moved to the new flat?

5) Michael is looking for job now.

Michael isn't looking for job now.

Is Michael looking for job now?

6) She's never seen this man before.

She's seen this man before.

Has she never seen this man before?

Объяснение: