S for Sound not for System

Don't be hesitate to express your ideas. Always try to tell the true stories when you are speaking as long as it will help you to avoid conflicts in your speech. If you are a good liar, get the best topic that you can speak like "At the moment I met States president, he asked me to...." like that. But remember as well as the examiner listen to you curiously he will ask you some follow up questions. Be ready for that. Otherwise you will lose all your points that you have gained from the beginning.