Student's Book without Answers with Online Practice and Workbook without Answers with Audio Download. Complete Key for Schools is the most thorough preparation for the revised A2 Key for Schools. Complete Student's Book allows you to maximise students' performance with the Complete approach to language development and exam training. It creates a stimulating learning environment with eye-catching images, easy-to-navigate units and fun topics. Students are able to build confidence through our unique understanding of the exam and insights from previous candidate performance. Online Practice offers practice in grammar and vocabulary. The Workbook provides further practice of language and vocabulary introduced in the Student's Book. The downloadable Audio contains the listening material which accompanies the Workbook. Downloadable Class Audio containing the Student's Book listening material is provided with the Teacher's Book.