The good old confuser. I actually found it a really useful tool but you are wise to use it only as a refresher for your knowledge of a subject, the temptation to use it as a 'let's just learn the answers' cheat sheet can be overwhelming.
Hope you passed mazzy, if you go on to do ATPLs then the fun increases tenfold. The CAA really do produce some corkers!
Good luck with the flying