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
발표를 시작하기 전에 소갯말을 해야 합니다.balpyo-reul sijak-hagi jeon-e sogaetmal-eul haeya hamnida.You need to give words of introduction before starting the presentation.