1. Here\'s your pen. Where is mine? 2. We always have dinner at this time. 3. Don\'t worry! I\'ll tell him about it. 4. Who is he? - He is a journalist. 5. Who is that girl? - She is my sister. 6. Don\'t do this instead of him! 7. They often write letters to each other. 8. These flowers are for you. - Thank you! 9. What kind of shoes do you like: these or those? 10. Meet my old school friend. 11. Give him those books. 12. Call me tomorrow at 8 p.m. (8 o\'clock in the evening), please.