I am a B1 Russian student and was happy to see Cheburashka in the list of audio books from Kristina. The rate of speech made listening easier as well as making spelling of unknown words easier so I could look them up. I got great results and listened to each chapter several times before listening to the whole presentation. It was fantastic. I have six of the Boost series and will soon have them all down. Thanks for your efforts, Kristina.