Вставить артикли. Урок английского языка для начинающих

1. " catalogue's small, but useful." "Yes, it's useful catalogue."

2. Just moment! Let me go and make call.

3. I've got girlfriend called Ruth. She's nurse in big hospital.

4. Could you turn off telly, please?

5. Do you speak English at work or at school?

6. There is picture on wall.

7. Is there refrigerator in your kitchen?

8.  English is world language.

9. There is book and pen on my writing desk.

10. David is best student in out class.