Ответ:

16. there are bicycles near the tree.

17. there are books on the table.

18. there are sweets in the box.

19. there are birds in the cage.

20. there are pears on the dish.

16. There is a dicycles near the tree.

17. There is a books on the table.

(буду писать само слово) 18.sweets

19. birds

20. pears