This book is a wonderful textbook for beginner level EFL students. I use this book for adult students but it can be used for teenagers as well. Every chapter is very easy to digest for students who have very little communication English communication skills. There are plenty of activities in between grammatical points, which help keep students engaged in the lesson.

 

One thing I didn't know when I bought this one was that the CD ROM with this book does NOT have all tracks shown in the book. I ended up buying a full version edition.