Make these sentences negative

1.There is a bookshelf by the window.
2.There are two girls in the room.
3.There is an armchair by the table.
4.There are two beds in the bedroom.

Помогите пожалуйста!

Я не знаю точно, верно это или нет, но все же. 1. There isn't a bookshelf by the window. 2. There aren't two girls in the room. 3. There isn't an armchair by the table. 4. There aren't two beds in the bedroom.

1. There isn't a bookshelf by the window.
2. There aren't two girls in the room.
3. There isn't an armchair by the table.
4. There aren't two beds in the bedroom.