150 страниц. 2010 год. SGEL This is the updated version of the classic "Avance": in four levels, according to the syllabus of Instituto Cervantes. It is for adolescents and adults. Each level consists of the student book (with its CD) - the tutor guide is available on the web. There is a model of the DELE exam in the 4th book, and in each book the transcription of the CD. It goes from level A1 through to B1.