Martin Hewings, Simon Haines: Cambridge English. Grammar and Vocabulary for Advanced with answers
The book is very good with interesting exercice and good presentation. However my only issue is with the audio. I've tried to download it from the cambridge website, you must sign in to be allowed to do it but their sign-in form has some errors making the process impossible. I wrote them an email and waiting for their assistance.
Kitob oq qora, soxta va puliga arzimaydi. Men original kitob deb oʻylagan edim. Bunday mahsulot sotmanglar