`1)` My father started smoking last year .
`->` My father didn't use to smoke before last year .
`2)` My sister stopped playing badminton after she had a traffic accident .
`->` My sister used to play badminton before she had a traffic accident .
`3)` They started to go to the fitness center after they gaining weight .
`->` They didn't use to go to fitness center before gaining weight .
`4)` When I was young , I believed in magic .
`->` I used to believe in magic when I was young .
`5)` Did you walk to school when you lived lived with your grandparents ?
`->` Did you use to walk to school when you lived with your grandparents ?
`6)` She was very nervous before every geography exam .
`->` She used to be very nervous before every geography exam .
`7)` When he was a little boy , he dreamed of being a superman .
`->` When he was a boy, he used to be dream of being a superman .
`8)` She is not able to dance well as she did in the past .
`->` In the past she used to dance better than she does now .
`9)` Did you go to the English for Kids Club when you were at primary school ?
`->` Did you use to go to the English for Kids Club when you were at primary school ?
`10)` My sister did not have long hair when she was a teeenager .
`->` My sister didn't use to have long hair when she was a teeenager .
