THE PECULIARITIES OF TEACHING SINGULAR AND PLURAL NOUNS IN ENGLISH AND RUSSIAN CLASSES IN MIDDLE SCHOOL. Education in the 21st Century, [S. l.], v. 5, n. 1, p. 154–163, 2023. DOI: 10.46991/educ-21st-century.v5.i1.154. Disponível em: https://journals.ysu.am/Educ-21st-Century/article/view/10338. Acesso em: 24 jun. 2026.