The level 4 exercise book comprises 12 units in total.Each unit contains the following:A selection of exercises to practise and consolidate content presented in the student's book (either individually or in the classroom).A brand-new section called 'Procesos y estrategias', with exercises designed to enhance learning strategies. Presented over 2 pages, this section is featured after every 2 units.A final annex with: activities relating to the videos; audio transcripts; answers to the exercises.The audio tracks can be downloaded for free via this link: https://ele.sgel.es/web/guest/descargas