I used to have a dog when I was a child
He used to be noisy when he was young
She used to go to the country when she was 7
I used to walk many years ago
They used to drive fast when he was 20
Did you use to have a dog?
Did she use to go to the country?
Did he use to drive fast/
Did they use to walk 5 years ago?
Did you use to play tennis 5 years ago?
I didn't use to walk when I was 5
He didn't use to drive when he was 18
She didn't use to go to the country when she was 7
My mother didn't use to play tennis when she was a pupil
He didn/t use to have a dog