What questions do newspaper proofreaders usually ask in interviews?

Maybe. Are you going to interview reporters or edit something? You must have asked the relevant questions. In fact, the examiner doesn't know what to ask, just ask a few words casually. The most important thing is not to be nervous and answer naturally. When I interview journalists, people will ask me what I think of the concept of journalists. When interviewing an editor, I was asked if you had any editing experience. Do you like writing? What software do you know? There is no need to be nervous. You will have experience after a few more interviews ~ I wish you success!