(-) означает, что артикль не нужен
1.This is a clock. 2. This is (-) Kiev. 3. (-) Kiev is a big city. 4. Mary is a girl. 5. She is (-) my sister. 6. This is a room. 7. Is the newspaper in the bag? 8. She is in the room. 9. Is the teacher in the classroom? 10. Is (-) your room large? 11. Is the pen in the bag? 12. Are you (-) students? 13. My friend has (-) children. 14. (-) Sportsmen are always in good form. 15. The children we saw in the street are schoolboys. 16. She lives in (-) 1st street.