What did Teacher X use to do?
Teacher X ______________________ (watch) Tom and Jerry, but now he likes watching Oggy and the Cockroaches.
Teacher X used to watch Tom and Jerry, but now he likes watching Oggy and the Cockroaches.
Teacher X ______________________ (watch) Dragon Ball, but now he likes watching One Piece.
Teacher X used to watch Dragon Ball, but now he usually watches One Piece.
Teacher X _______________________ (have) a camera, but he has one now.
Teacher X didn't use to have a camera, but he has one now.