What should I do if I pass the exam of subject 2 and don't sign it? You can go back and re-sign it. For example, you made an appointment for the exam of subject 2, and passed it that day, but forgot to sign and upload it. After you find the coach and explain the situation to him, the coach will go to the examination room with you, tell the examiner that you are too excited to forget the exam, and then use your ID card to brush out your exam results and complete the sign-in, as long as your ID card is the same.