1. This is the nicest restaurant I have seen. 2. Three people have left the company this week. 3. I have wrote three letters already. 4. We have had two holidays this year. 5. There has been a revolution in San Serife. 6. Someone has knocked down your front gate! 7. Have you ever eaten Indonesian food?8. Have you done your homework?9. It’s the first time I have been here. 10. You have had a shave!11. She’s got the best voice I have ever heard. 12. This is the fourth time he has damaged my car.13. He has been here since eight o’clock. 14. She just has gone out. 15. Have you already seen Mary?