Помогите пожалуйста, нужно изменить слово в скобках, на подходящее по ситуации время

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

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.