1. (-) Susan didn't use to live in Paris.
(?) Did Susan use to live in Paris?
2. (+) They used to commute from New York to London.
(?) Did they use to commute from New York to London?
3. (+) My mother used to teach at the local school.
(-) My mother didn't use to teach at the local school.
4. (+) He used to cry a lot.
(?) Did he use to cry a lot?
5. (-) Jane didn't use to work for a non-profit organisation.
(?) Did Jane use to work for a non-profit organisation?
6. (+) Jim used to own an old car.
(-) Jim didn't use to own an old car.
7. (+) This house used to belong to my family.
(?) Did this house use to belong to your family?
8. (-) My brother didn't use to go swimming when he was young.
(?) Did your brother use to go swimming when he was young?