Take the exam within 20-30 days after the completion of subject 2, take the exam within 20-30 days after subject 3, and get the certificate within 2-3 days.
Personal suggestion: I take patience and other subjects, and I'm not afraid of driving school cheating you. Now that you're gone, the money I paid in front is in vain. I suggest that you pay 200 yuan to the coach when you take the subject three, and he will help you manage the subject three. I promised.
I have seen many people who didn't pay the money meet bad examiners or get nervous in the third exam, and then they have to fail.