Question Generator System of Sentence Completion in TOEFL Using NLP and K-Nearest Neighbor. Indonesian Journal of Science and Technology, [S. l.], v. 4, n. 2, p. 294–311, 2024. Disponível em: https://ejournal.kjpupi.id/index.php/ijost/article/view/179.. Acesso em: 4 sep. 2025.