Английский язык, 7 класс

1. What are you doing here at such a late hour? Are you writing your composition? — No, I have written it already. I am working at my report. — And when did you write your composition? — I have 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 has stopped raining. 4. Please give me a pencil, I have lost mine. 5. I have not 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 have read "Ivanhoe" by Walter Scott a month ago. What about you? Have you read "Ivanhoe"? 10. My watch has stopped. There is something wrong with it. 11. Have you seen Jack today? — Yes, I have seen him at the institute. 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. Has anything happened?