Czech It Up! 5 (úroveň C1, cvičebnice)

Czech it UP! is a modern and comprehensive series of Oxford-style Czech textbooks and workbooks for foreigners. It comes in a magazine format, with timeless and contemporary topics, a website with accompanying audios and videos as a bonus, and covers the full range of language learning from beginners (A1) to the most advanced students (C1). More information about the project at czechitup.upol.cz.
(It is a static PDF version, which can be read without limitations in Publi.cz app and at the same time the PDF file cannot be downloaded directly to the device.)