The Workbook mirrors the structure of the Students' Book and also offers an extensive full-color reference section covering grammar, vocabulary, speaking and listening, pronunciation, and self-assessment. It can be used in class for fast or more advanced students or as homework. It is ideal for groups of varying levels, as activities are categorized by difficulty level with one, two, or three stars. The one-star activities are achievable for all students, the two-star activities are aimed at intermediate students, and the three-star activities offer additional challenge for advanced students. The included MP3 CD contains all the audio tracks from the Workbook.