Choose a or an

1. [a|an]
   apple
2. [a|an]
   egg
3. [a|an]
   doll
4. [a|an]
   trumpet
5. [a|an]
   pencil case
6. [a|an]
   exercise book
7. [a|an]
   teddy bear
8. [a|an]
   train
9. [a|an]
   rabbit
10. [a|an]
    monkey