1. They are long stories.
2. These are keys.
3. Those are new shops.
4. They are flies.
5. They are big countries.
6. They are chiefs.
7. They are black cats.
8. Those are clever dogs.
9. They are oranges.
10. They are nice boys.
11. They are strange fish.
12. They are good wives.
13. They are bad teeth.
14. They are yellow leaves.
15. They are beautiful deer.
16. Those are new potatoes.
17. These are red roofs.
18. They are my files.
19. They are wonderful children.
20. They are white sheep.