Champions League quiz: Test your knowledge of group stage as last-16 ties start

The Champions League is back this week with the first legs of four last-16 ties taking place - but how much do you remember about the group stage?

All four English teams are still in the competition but it was not all plain sailing, with several defeats along the way.

To get in the mood for the return of Europe's elite club competition, test your knowledge of this season's action so far. Good luck!