PHAM, T. H. Q. ENHANCING STUDENTS’ ENGLISH ORAL COMMUNICATION SKILLS THROUGH ROLE-PLAY ACTIVITIES: A CASE STUDY AT HANOI UNIVERSITY OF NATURAL RESOURCES AND ENVIRONMENT. 知识学习与科学技术期刊 ISSN:2959-6386(在线), v. 4, n. 3, p. 119–127, 14 10月2025.