Переделать следующие предложения в отрицательные и вопросительные. 1. there are three windows in the classroom. 2. there is a pupil at the blackboard. 3. there is a bunch of flowers on the table. 4. there are books on the shelf.

1. Are there three windows in the classroom?

There aren't three windows in the classroom.

2. Is there a pupil at the blackboard?

There isn't a pupil at the blackboard.

3. Is there a bunch of flowers on the table?

There isn't a bunch of flowers on the table.

4. Are there books on the shelf?

There aren't books on the shelf.