почему  цветки ландыша и сирени обладают сильным ароматом 

Помогите пожалуйста!

1. I (not yet to eat) today. 2. He (not to eat) yesterday. 3. You (to play) the piano yesterday? 4. You (to play) the piano today? 5. What you (to prepare) for today? 6. Look at this birdhouse. Mike (to make) it himself. He (to make) it last Sunday. 7. Where you (to put) my pen? I cannot find it. 8. You (to see) Mary today? 9. When you (to see) Mary? - I (to see) her last week. 10. Your mother (to promise) to take you to the theatre? 11. Look at my new dress! I (to make) it myself. 12. He is not at school today, he (to fall) ill. - When he (to fall) ill? - He (to fall) ill yesterday. 13. I already (to do) my homework. Now I can go for a walk. 14. I (to do) my homework yesterday. 15. He just (to come) home. 16. He (to come) home a minute ago. 17. Nick (to play) football yesterday. 18. She already (to come) from school. Now she is doing her homework. 19. I (to read) this book last year. 20. I (to read) this book this year. 21. I never (to be) to Washington. 22. You ever (to be) to New York? 23. I don't  think you ever (to see) Niagara Falls. 24. I (to invite) Linda to the party. - When you (to see) her? - I (not to see) her for ages. I (to call) her an hour ago.

о чудесной музыке, к низенькой берёзке, по широкой дороге, из прочной ткани, до ближней деревни, на еловой ветке, на белой скатерти