ВСТАВЬ is  ИЛИ are) 

1)THERE ... a nice garden behind the house. 

2) There .... a lot of big apple trees in the garden. 

3) There .... a cow and a house near the river. 

4) .... there a bridge over the river? - No there ...n’ t. 

5) .... there many forests in Russia ? - Yes there ....