1. I have known him for three years. 2. My friend has helped me to solve a difficult problem. 3. Have you ever been to London? 4. They haven't been here since last year. 5. We have bought new shoes today. 6. Have you seen him today? 7. What have you already done? 8. He has done nothing yet. 9. They have already returned home. 10. He hasn't woke up yet.
2. My friend has helped me to solve a difficult problem.
3. Have you ever been to London?
4. They haven't been here since last year.
5. We have bought new shoes today.
6. Have you seen him today?
7. What have you already done?
8. He has done nothing yet.
9. They have already returned home.
10. He hasn't woke up yet.