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 ...

📖 How good is your English grammar? Take this 30-question test to find out your English level from Beginner (A1) to Advanced (C1)! 🏆 In this video, Anastasia, one of our expert teachers, will guide ...

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