Hundreds of exercises to get you to the next level Collins Work on your Grammar - Advanced (C1) is a new practice book that covers the key grammar points needed by learners of English at Advanced level (CEF level C1). This book is an essential resource for learners who want to improve their English grammar. Each of the 30 units presents a different area of grammar using clear language and examples. This is followed by practice exercises to ensure the learner will remember and be able to use what...