If you really want to use your original, use "on a piece of paper" for an accidental cut and "with a piece of paper" if you did it on purpose (I don't know why you would!)
If you really want to use your original, use "on a piece of paper" for an accidental cut and "with a piece of paper" if you did it on purpose (I don't know why you would!)
They were supposed to talk about accidents and injuries in the speaking class. I told them about this kind of injury. I think they all have got a paper cut. It's really painful!
They were supposed to talk about accidents and injuries in the speakingspoken English class. I told them about this kind of injury. I think they have all havegothad a paper cut. It's really painful!
Note my changes above. If you say "I think they have all got a paper cut" it means they're all suffering from a paper cut right now. That's very unlikely. I think you mean that, at some point in their lives, they have all experienced (had) a paper cut.