This is a B1 level English learning course. The series covers the material of D 'and E' Senior classes and is specially designed to prepare students for the B1 level exams. Its innovation is that, although it teaches two classes together, it has a light structure as it presents the material pleasantly, in a simple and understandable way. The series consists of three main books and is accompanied by the i-book. The i-book is a software that contains the pronunciation and translation of the vocabulary in an interactive form, the audios of the videos of the texts and additional vocabulary and grammar exercises. The exercises are different from those in the book - in the form of video games and are automatically corrected with an automatic grading system. Now you can download the i-book application, to learn English easily and pleasantly from your tablet or smartphone.