みんなの日本語ⅡThe Japanese for everyone Ⅱ https://kottita.com/2021/10/06/%e3%81%bf%e3%82%93%e3%81%aa%e3%81%ae%e6%97%a5%e6%9c%ac%e8%aa%9e%e2%85%b1the-japanese-for-everyone-%e2%85%b1-japanese-language-learning/