1.I can drive a car, but I could not last year.
2.Where can I buy a good phone?.
3.I could not speak when I was a child, but she could play computer games.
4.My kids can not cook dinner but your can clean the rooms
5.When can we meet?
6.Tom knew how to ride a bicycle when he was a little kid. His parents were very happy with that.
Myślę, że najlepiej ;)