There is a heavy emphasis on idioms and collocations, which are essential for sounding natural at a C1 level.
One of the best features of this book is its versatility. It is specifically designed for: New Cambridge Advanced English Student's book
These focus on real-world topics like "Handwriting," "Past Times," and "Media Matters". You will find authentic reading texts, interviews, and fluency-based activities. There is a heavy emphasis on idioms and
Mastering C1: Inside the New Cambridge Advanced English Student's Book " "Past Times
I can help you find supplementary practice tests or recommend modern digital alternatives like Open World C1 Advanced if you prefer mobile-integrated learning. New Cambridge Advanced English