1. Are there many houses in the London suburbs?
There aren't many houses in the London suburbs.
2. Has he a family?
He hasn't a family.
3. Is there a garden in front of her house?
There isn't a garden in front of her house.
4. Are we have a large room?
We aren't have a large room.
5. Is he in the sitting-room?
He isn't in the sitting-room.