1. are plastic bags. (→ → → →)

2. Is a firefly? (→ → → →)

3. is our guest. (→ → )

4. Are trees old? (→ → )

5. flowers are colourful. (→ → → →)

6. Is man a scientist? (→ → )

7. is a shop. (→ → → →)

8. Are benches destroyed? (→ → → →)

9. Is woman your relative? (→ → )

10. magazines are very interesting. (→ → → →)

11. is a hotel. (→ → )

12. exercises aren’t easy. (→ → )

13. Is song for me? (→ → )

14. castle is very old. (→ → → →)

15. Are headphones expensive? (→ → )

16. boy is unhappy. (→ → → →)

17. bicycles aren’t new. (→ → )

18. vegetables are fresh. (→ → → →)

19. Isn’t car cool? (→ → → →)

20. butterflies are beautiful. (→ → )