Помогите пожалуйста, необходимо изменить слово в скобках, на подходящее по ситуации

1.Ben has been playing video games for an hour.

2.Mum goes to the bakery.

3. We has left the shop yet.

4. I haven't bought when I was at the bazar.

5. How long have you been wearing these jeans?

6. This hairdresser's has been changing a lot since our last visit.

played, is going, haven't left, didn't buy, did you have, have changed