2. Who doesn't have to clean his (her) bedroom every week?
Rob doesn't have to clean his bedroom every week.
3. Who has to take the dog for a walk?
Rob has to take the dog for a walk.
4. Who has to help in the garden?
Kim,Mark and Rob have to help in the garden.
5. Who doesn't have to help in the garden?
Vicki doesn't have to help in the garden.