My head teacher had an accident, so I'm going to see her. What should I say to him?

First of all, of course, ask about the injury, and then you can check some information about post-accident self-cultivation and have a look for yourself. When you go, you can say to the teacher: Take a rest, and I'll hear what you can do. (this is mainly used to avoid embarrassment, but there is really no topic. ) Then tell him about the class and yourself.