『語彙ドン！』音声ファイル Lesson 20 20-1 https://www.9640.jp/wp-content/uploads/2018/05/20-1.mp3 20-2https://www.9640.jp/wp-content/uploads/2018/05/20-2.mp3 20-3https://www.9640.jp/wp-content/uploads/2018/05/20-3.mp3 20-4https://www.9640.jp/wp-content/uploads/2018/05/20-4.mp3 20-5https://www.9640.jp/wp-content/uploads/2018/05/20-5.mp3 20-6https://www.9640.jp/wp-content/uploads/2018/05/20-6.mp3 20-7https://www.9640.jp/wp-content/uploads/2018/05/20-7.mp3 20-8https://www.9640.jp/wp-content/uploads/2018/05/20-8.mp3 Lesson 20をまとめてダウンロード（.zip）
