Помогите раскрыть скобки употребляя глаголы в Present Perfect либо Past Simple

1. I havent (have not) eaten today yet. (Present Perfect) 2. He didnt (did not) eat yesterday. (Past Simple) 3. Did you play the piano yesterday? (Past Simple) 4. Have you played the piano today? (Present Perfect) 5. What have you prepared for today? (Present Perfect) 6. Look at this birdhouse. Mike has made it himself. (Present Perfect) He мейд it last Sunday. (Past Simple) 7. Where have you put my pen? I cannot find it. (Present Perfect) 8. Have you seen Mary today? (Present Perfect) 9. When have you seen Mary? (Present Perfect) I saw her last week. (Past Simple) 10. Did your mother promise to take you to the theatre? (Past Simple)