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Disclaimer: This article is for informational purposes regarding resource availability. We strongly encourage supporting authors and publishers by purchasing official copies when financially possible.
However, textbooks are often expensive. This is why a specific search term has been trending among self-learners:
In the journey of mastering English as a Second Language (ESL), reaching the B2 (Upper Intermediate) level is a pivotal milestone. It is the stage where you move beyond simple survival phrases and start expressing opinions, debating, and navigating complex social and professional situations.