That's life unfortunately. As a dated Beryllium speaker I would not use class, I would use lesson. May be it's the standard Schwierigkeit of there being so many variants of English. 知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 Rein both the UK and the US, a class is usually a group of students https://seitensprung-deutschland80234.blogs-service.com/64676876/rhythm-eine-Übersicht