5.Fill in a or an or some

Explicație:
1. a
2. a
3. an
4. some
5. some
6. some
7. a
8. some
9. a
10. an
1. a
2. some
3. an
4. some
5. some
6. some
7. a
8. some
9. a
10. an
coroana?