Lesson20_Sounds・音声 Conversation 1 https://www.9640.jp/wp-content/uploads/2020/04/L20-c1.mp3 2 https://www.9640.jp/wp-content/uploads/2019/09/L20-c2.mp3 3 https://www.9640.jp/wp-content/uploads/2019/09/L20-c3.mp3 まとめてダウンロード｜Download all sounds Lesson20の音声をまとめてダウンロード｜Download all sounds of Lesson20
