1. I have lived in this city for 10 years. 2. I have visited many countries. 3. I have washed my car. 4. I have bought a new phone. 5. I have come to school early today. 6. I have gone to the cinema. 7. I have stopped smoking. 8. I have played the guitar. 9. I have done my homework. 10. I have had a great time. 11. I have read many books. 12. I have lost my keys.