used to / didn't use to

. I (go) ____________ to work by bus but now I drive my car to work

• used to go

• didn't use to go

Joe and I (like) _____________ each other but now we are best friends

• didn't use to like

• used to like

Sue (fancy) _______________ rock music but now she is a fan of it

• used to fancy

• didn't use to fancy

_________________ (you/catch) fireflies when you were a child?

• Did you used to catch

• Did you use to catch

My father (smoke) _______________ a lot but he gave up three years ago.

(smoke: hút thuốc; gave up: đã bỏ)

• used to smoke

• didn't use to smoke

My student (be) __________ very bad at Math but now he improves a lot

• used to be

• didn't use to be

This doctor (be) ___________ famous but now everyone knows him

• used to be

• didn't use to be

Jane (break) _______________ the speed limit and a police officer stopped her

• used to break

• didn't use to break