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
설문조사에서 응답자는 자신의 의견을 표현해야 합니다.seolmunjosaeseo eungdapjaneun jasinui uigyeon-eul pyohyeonhaya hamnida.In the survey, the respondent must express their opinion.