Cambridge University Press and Cambridge Assessment, 2021. — ISBN-13 978-1-108-78499-3.
These are the audio files for the book «C1 Advanced 4. Student's Book with Answers with Audio with Resource Bank: Authentic Practice Tests»:
/file/3910902/. This archive also contains a photo of the page with an error in the book (missing one answer in the test) and a book cover.
Resource Bank:
/file/4144427/