Поставить предложение в вопросительную и отрицательную форму there are children in

1. There are children in the street.
Are there children in the street?
There are no children in the street.
2. The cadet is at the desk.
Is the cadet at the desk?
The cadet isnt at the desk.
3. They get up at 7 oclock.
Do they get up at 7 oclock?
They dont get up at 7 oclock.
4. He wants to be a sailor.
Does he want to be a sailor?
He doesnt want to be a sailor.