YULDASHOVA UMIDA BAXTIYAR KIZI. CHALLENGES AND OPPORTUNITIES IN TEACHING ENGLISH BASED ON CEFR (B2) REQUIREMENTS. International Engineering Journal For Research & Development, [S. l.], v. 7, n. 1, p. 3, 2022. DOI: 10.17605/OSF.IO/CW3U4. Disponível em: https://iejrd.com/index.php/iejrd/article/view/2697. Acesso em: 2 may. 2026.