1. What are you doing,
are you writing, I have written, I am working, when did you write, I finished.
2. I have already had. 3. What`s the weather like? Is it still raining? – No,
it has stopped raining. 4. I have lost. 5. I have not met, 6. Nina has just
finished. 7. Where is Sergei, he has gone, he left. 8. What are you reading, I
am reading. 9. They read, have you read. 10. My watch has stopped, there is.
11. Have you seen, I saw. 12. Have you heard, I have, when did you hear, I
heard. 13. You have changed, has anything happened.