1. I have played this game.
2. She has flown before.
3. Joyce has eaten all the cookies.
4. The scientists have discovered a new planet.
5. He has built a garage.
6. Richard has passed all his exams.
7. My friend has paid for everything.
8. They have given her the tips.
9. I have been to this place.
10. We have met before.
11. She has caught a butterfly.
12. Christina has written the essay.
13. They have bought a cat.
14. I have done it.
15. She has watched that TV show.
16. I have cooked anything.
17. He has parked his car outside.
18. He has left his phone at home.
19. Mark and Julie have fed their dog.
20. I have drunk coffee today.