-Are you familiar with the music?-Yes. There was a time _____ this kind of music was quite popular.
He set an example ______ his classmates.
He attends the evening class ________ , that is, Monday, Wednesday and Friday.
I thought you ____ like something to read, so I have bought you some books
It _______ them $1000 a year to run a car.
—Where was it ______ the road accident happened yesterday? —In front of the market.