While the full textbook is a copyrighted work and usually requires a physical or digital purchase, specific supplementary content is officially available for free in PDF and audio formats from the publisher, 3A Corporation Official PDF & Digital Resources
“Lesson 10: ～には (as for) and ～のほうが (comparison)” chuukyuu e ikou 55 pdf
(中級へ行こう 日本語の文型と表現55) textbook, highlighting its role as a bridge to intermediate Japanese. While the full textbook is a copyrighted work
Level Up Your Japanese: Why "Chuukyuu e Ikou 55" is the Perfect Intermediate Bridge chuukyuu e ikou 55 pdf