I found a nice little site with games for teachers of French. One of the ideas that I liked was the “The Queen of England never…” game….

1) You write the phrase on the board.
2) Kids race to the front and take turns to continue the sentence in as many ways possible.

Examples they give are The Queen of England never … takes the bus, pays in cash, goes to the pub etc. You could also change it to any famous person, teacher or cartoon character.

Could be a good idea for Junior High level practice? You can find out more at http://www.frenchteacher.net/jeux.htm