2020-11-04 Kore kara no Keigo: Bunka-chou (2020/10/18)Bunka-chou Kore kara no Keigo https://www.bunka.go.jp/kokugo_nihongo/sisaku/joho/joho/kakuki/01/tosin06/index.html Kokugo-Mondai-Mondou Dai-3-shuu https://www.bunka.go.jp/kokugo_nihongo/sisaku/joho/joho/series/26/26.html https://www.bunka.go.jp/kokugo_nihongo/sisaku/joho/joho/series/26/pdf/kokugo_series_026_04.pdf
