Помогите пожалуйста 5,6 даю 20 баллов

ex.5. 1. There are three potatoes on the table
2. There arent pupils in the classroom
3.There is a lemon on the plate
4. There arent cars in the street
5. There is one bottle of Coca-Cola in the fridge
6. There is a pencil-box in the school-bag
7. There are two women in that car
8. There is a nice kitten on the chair
9. There is a rose in the beautiful vase
ex.6 
1. There are three letters on the table
2. There is a policeman in the car
3. There are two bottles of milk in the fridge