1) Pam has got a ball and roller-skates, but she hasn't got a teddy bear or a guitar.
2) Jack has got a bear and a guitar, but he hasn't got a ball or roller-skates.
3) John&Tony have got a ball and a guitar, but they haven't got a bear or roller-skates.
4) Helen&Nancy have got a guitar and roller-skates, but haven't got a bear or a ball.
5) Steve has got a bear and a guitar, but he hasn't got a ball or roller-skates.