Ответ:

1. an 1. some

2. some 2. some

3. a 3. some

4. an 4. a

5. some 5. an

6. a 6. some

7. some 7. a

8. some 8. some

9. a 9. a

10. an 10. a

11. some 11. some

12. some 12. an

13. some 13. some

14. some 14. some