1. — What are you doing here at such a late hour? Are you writing your essay? — No, I have already written it. I am working on my report. — And when did you write your essay? — I finished it two days ago.

2. I say, Tom, let's have dinner. — No, thank you, I have already had dinner.

3. — What is the weather like? Is it still raining? — No, it stopped raining.

4. Please give me a pencil, I have lost mine.

5. I haven’t met Peter since Monday.

6. Nina has just finished work.

7. — Where is Sergei? — He has gone home. He has left the room a minute ago.

8. — What are you reading now? — I am reading «Jane Eyre» by Charlotte Bronte.

9. They read «Ivanhoe» by Walter Scott a month ago. What about you? Have you read «Ivanhoe»?

10. My watch stopped. There is something wrong with it.

11. — Have you seen Jack today? — Yes, I saw him at the University.

12. — Have you heard the new symphony by M.? — Yes, I have. — When did you hear it? — I heard it last Sunday.

13. You have changed so much. Did anything happen?