The first thing that you need to do before you take the B1 English test is to practice your speaking skills. You can try this by standing up in front of the mirror and start to say what you want to say in English. You can speak about your school, job, family, or friends. Look at the mirror and see your expression when you are speaking in English.
You can try to speak naturally and try to relax. Here, you can practice giving the good answer. To support you in doing this, you can play the radio or the video about the interview. The only thing that you can do to this way is to answer the questions of the interviewer. You can also listen to the answers of the interviewee and find out the way interviewee answer the given questions. Find out more about B1 cefr by visiting our website.