Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
예고제를 통해 학생들에게 중요한 공지를 전달합니다.yegoje-reul tonghae haksaengdeul-ege jungyohan gongji-reul jeondalhamnida.The notification system delivers important announcements to students.