WIANGIN, Nanthanut et al.
Verb to be in Progressive Tense in American English.
วารสารพุทธปรัชญาวิวัฒน์, [S.l.], v. 6, n. 2, p. 673-683, june 2022.
ISSN 2730-2644.
Available at: <http://705527.funfizzhk.tech/index.php/jbpe/article/view/1985>. Date accessed: 02 dec. 2024.