...#cấp độ khó
* #Thông thạo ngôn ngữ
* #Đánh giá ngôn ngữ
* #cefr
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#B2Test #difficultylevel #languageproficiency #languageassessment #cefr #LanguageLearning **How difficult is the B2 level test?**
The B2 level test is a standardized test of language...
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