Make these sentences negative. His sister works in tayford. Their parents live in lindon. They've got a big house. They

1. His sister works in Tayford.His sister doesn’t work in Tayford.Does his sister work in Tayford?2. Their parents live in London. Their parents don’t live in London.Do their parents live in London?3. They\'ve got a big house. They haven’t got a big house.Have they got a big house?4. They went to Oxford last year. They didn’t go to Oxford last year.Did they go to Oxford last year?5. Colin’s grandparents were doctors.Colin’s grandparents weren’t doctors.Were Colin\'s grandparents doctors?