English Skills for Independent Learners C1 is also in the series Aprendiendo Ingles by the Universidad Nacional de Educacion a Distancia (UNED) and takes autonomous learners from level B2 to level C1 of the Common European Framework. User-friendly introduction explains in detail how to learn English autonomously outside the classroom Fully comprehensive answer section contains model answers and extra guidance Carefully designed reading, writing, listening and speaking exercises help learners convert input into output Most frequent English words specially grouped to make learning easier.