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 ______ green English book on the desk.
2. She's reading ______ old comic.
3. They've got _____ idea.
4. He is drinking _____ cup of coffee.
5. The girl is_____ pilot.
6. Leipzig has ______ airport.
7. This is ______expensive bike.
8. Look! There's______ bird flying.
9. My father is______ honest person.
10. My friend likes to be_____ 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.