3. Use a or an. Write the correct forms of the indefinite articles into the gaps. There is no article in some sentences.

1. There is a green English book on the desk. 2. She\'s reading an old comic. 3. They\'ve got an idea. 4. He is drinking a cup of coffee. 5. The girl is a pilot. 6. Leipzig has an airport. 7. This is an expensive bike. 8. Look! There\'s a bird flying. 9. My father is an honest person. 10. My friend likes to be an astronaut. 11. Jane is a very good friend. 12. Love is everything to me. 13. I prefer milk. 14. I have cats in my room.