1) There are three potatoes on the table
2) There aren't pupils in the classroom
3) There's a lemon on the plate
4) There aren't 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