1. These are birds. 2. Are those also birds? - No, they aren't. Those are cats. 3. Are those good horses? - Yes, they are. 4. Are those cows big or small? - They are big. 5. These are apples and those are flowers. 6. Where are the coins? - they are in the box. 7. What colour are the boxes? - They are green. 8. What are they made of? - They are made of wood. 9. What are those men? - They are clerks. 10. Are they in the office? - Yes, they are. 11. Are those women typists? - No, they aren't. - What are they? - They are doctors. 12. Are his brothers at home? -Yes, they are. 13. These houses have a balcony looking out on the street. 14. The architecture of these buildings is quite modern. 15. These are new districts of St. Petersburg. 16 There are shops, cinemas and theatres in the new district. 17. They are retired workers. 18. We are doctors. 19. We hear the sounds of children's voices. 20. They are nice girls.
В №14 не совсем понятно что ставить во множественное число. Думаю, здесь есть подвох, т.к. архитектура, как неисчисляемое, может стоять только в единственном числе. Поэтому поменяла единстенно возможное - "здание".
