1. I (have not yet eaten) today. 2. He (did not eat) yesterday. 3. Did you (play) the piano yesterday? 4. Have you ( played) the piano today? 5. What have you prepared for today? 6. Look at this birdhouse. Mike has made) it himself. He made) it last Sunday. 7. Where have you put) my pen? I cannot find it. 8. Have you seen) Mary today? 9. When did you see) Mary? - I saw her last week. 10. Did your mother promise) to take you to the theatre? 11. Look at my new dress! I have made) it myself. 12. He is not at school today, he has fallen) ill. - When did he (fall) ill? - He fell) ill yesterday. 13. I have already done) my homework. Now I can go for a walk. 14. I did my homework yesterday. 15. Hehas just come) home. 16. He came) home a minute ago. 17. Nick played) football yesterday. 18. She has already come) from school. Now she is doing her homework.