5. поставьте глаголы в нужном времени (past simple или present perfect). 1. i already (to do) my homework. now i can go for a walk. 2. i (to do) my homework yesterday. 3. he just (to come) home. 4 he (to come) home a minute ago. 5. nick (to play) football yesterday. 6. she already (to come) from school. now she is doing her homework. 7. i (to read) this book last year. 8. i (to read) this book this year. 9. i never (to be) to washington 10 you ever (to be) to new york? 11. you ever (to see) the eruption of a volcano? 12. i (not yet to eat) today. 13. he (not to eat) yesterday. 14. you (to play) the piano yesterday? 15. you (to play) the piano today? 16. what you (to prepare) for today?

Вот правильные формы глаголов для ваших предложений:

1. I have already done my homework. (Present Perfect — результат в настоящем, есть слово already)
2. I did my homework yesterday. (Past Simple — указано точное время в прошлом yesterday)
3. He has just come home. (Present Perfect — действие только что совершилось, есть слово just)
4. He came home a minute ago. (Past Simple — указано время a minute ago)
5. Nick played football yesterday. (Past Simple — указано время yesterday)
6. She has already come from school. (Present Perfect — результат в настоящем, есть слово already)
7. I read this book last year. (Past Simple — указано время last year)
8. I have read this book this year. (Present Perfect — период времени this year еще не закончился)
9. I have never been to Washington. (Present Perfect — жизненный опыт, есть слово never)
10. Have you ever been to New York? (Present Perfect — вопрос о жизненном опыте, есть слово ever)
11. Have you ever seen the eruption of a volcano? (Present Perfect — вопрос о жизненном опыте)
12. I have not yet eaten today. (Present Perfect — период времени today не закончен, есть слово yet)
13. He did not eat yesterday. (Past Simple — указано время yesterday)
14. Did you play the piano yesterday? (Past Simple — вопрос о конкретном времени в прошлом)
15. Have you played the piano today? (Present Perfect — период времени today не закончен)
16. What have you prepared for today? (Present Perfect — связь с настоящим моментом)

Чтобы лучше закрепить тему, рекомендую изучить таблицу маркеров времени для Past Simple и Present Perfect. Сообщите, если вам нужно разобрать правила образования отрицательных или вопросительных форм для этих времен.