Упражнение 1. Раскройте скобки, чтобы получить Present Perfect или Past Simple.

1. I did this exercise before. 2. I did this exercise two minutes ago. 3. We have gone to school since the first form. 4. We went to school yesterday. 5. You saw a horse last week. 6. You haven't ever seen a horse. 7. He has just said that. 8. He said that a minute ago. 9. They have already had breakfast. 10. They had breakfast at 2 o'clock. Объяснение: В этом упражнении нужно раскрыть скобки, используя либо Present Perfect (настоящее совершенное время), либо Past Simple (простое прошедшее время). Выбор времени зависит от контекста предложения и наличия слов-маркеров. Например, 'ago', 'yesterday', 'last week' указывают на Past Simple, а 'before', 'already', 'ever' - на Present Perfect.