Active grammar 3.(+key) (+cdrom)

The textbook of Active grammar 3.(+key) (+cdrom) it's from the publisher CAMBRIDGE.

A three-level series of grammar reference and practice books for teenage and young adult learners. Active Grammar Level 3 covers all the grammar taught at C1-C2 (CEF) level. The book presents grammar points in meaningful context through engaging and informative texts, followed by clear explanations. Useful tips highlight common mistakes that advanced level students usually make. Carefully graded exercises provide plenty of challenging practice and encourage students to apply  their own ideas creatively to grammar learning. A large number of contrastive revision exercises in the book and on the CD-ROM allow students to assess and monitor their progress. The answer key at the back of the book makes this version ideal for self-study.