The B2 level, according to the Common European Framework of Reference for Languages (CEFR), is considered "upper-intermediate." At this level, learners can understand the main ideas of complex text, interact with a degree of fluency and spontaneity, and produce clear and detailed text on familiar subjects.
Ending with a specific suggestion based on the findings presented in the report. Mastering-Use-of-English.pdf Mastering Use Of English B2 Exams Edition Teacher 39