This book is simply fantastic! I already owned a full Russian version of the “Adventures of Tom Sawyer”, but reading and listening to Kristina’s version in the 2 different speeds available helped me tremendously, first in my pronunciation, but most of all, in applying the correct intonation while reading the story myself out loud to my Russian-born son. At the end of each chapter, the mini quizzes are a good way to check if you truly understood what you just read. So, this is an indispensable add-on to any graded reader books. I would definitely recommend this book or any other materials from “Boost Your Russian” to other Russian learners, since I have consumed more than 2 courses, and obtained other graded reader materials from BYR! I’m waiting for other books to become available, specially for the B1-B2 levels.