1.I already have done my homework.Now I can go for a walk. 2. I did my homework yesterday. 3. He has just come home, 4. He has come home a minute ago. Nick played football yesterday. 6. She already has come from school, now we are doing her homework 7. I read this book last year. 8. I have read this book this year. 9. I have never been to Washington. 10. Have you ever been to New York? 11. Have you ever seen the eruption of a volcano? 12. I have not eaten today yet. 13. He did not eat yesterday. 14. Did you play the piano yesterday? 15. Have you played the piano today? 16. What did you prepare for today? 17. Look at this bird-house! Mike made it himself. He made it last Sunday. 18. Where did you put my pen? I cannot find it. 19. Have you seen Mary today? 20. When did you see Mary? 21. I saw her last week. 22. Your mother promised to take you to the theatre. 23. Look at my new dream! I have made it myself. 24. He is not at school today, he has fallen ill. - When has he fallen ill?
2. Who
3. How
4. Establishments
5. Certificates
6. Obtained