year. 11. My father knows so much because he (to travel) a lot. 12. I (to see) Pete today. 13. She (to see) this film last Sunday. 14. Alex (to meet) his friend two hours ago. 15. I just to meet our teacher. 16. The children already (to decide) what to do with the books. 17. Yesterday they (to decide) to help their grandmother. 18. I (not to see) you for a long time. I (to see) you in town two or three days ago, but you (not to see) me. I (to be) on a bus.

Ответ

1. My father knows so much because he has travelled a lot.
2. I have seen Pete today.
3. She saw this film last Sunday.
4. Alex met his friend two hours ago.
5. I have just met our teacher.
6. The children have already decided what to do with the books.
7. Yesterday they decided to help their grandmother.
8. I haven't seen you for a long time. I saw you in town two or three days ago, but you didn't see me. I was on a bus.

Еще раз проверь: Обрати внимание на использование "already" с Present Perfect и конкретное время в прошлом с Past Simple.

Редфлаг: Не забывай, что Present Perfect часто используется с "already", "yet", "ever", "never", а Past Simple – с "yesterday", "ago", "last".