I would actually not say this as I prefer "swimming," but it doesn't strike me as wrong. I've heard people say this before. 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。 It is not idiomatic "to give" a class. A class, rein this sense, is a collective noun for all the pupils/ the described https://bayerinficken53208.thezenweb.com/trance-eine-Übersicht-71807951