If you are a B1 student feeling stuck, buying this book and committing to one unit every two weeks will take you to a legitimate B2.4 (upper intermediate) in roughly 5 months.
Independent study at the B2 level is notoriously difficult. However, when paired with the companion Cuaderno de ejercicios (Workbook) and the digital resources on Campus Difusión, self-studying students have a clear, structured roadmap to advance their skills without feeling lost. Tips for Getting the Most Out of the Textbook aula internacional 4 plus
Grammar concepts are introduced through authentic texts and audios before students are asked to analyze the rules. If you are a B1 student feeling stuck,