If you could change one thing about your appearance, what would it be?
Should voluntary plastic surgery be banned?
Have you ever witnessed a crime?
What's wrong with public nudity?
Was drug use a problem in your high school?
Should young children be required to learn English? If so, from what age?
Are girls smarter than boys?
What is a natural disaster? What are some kinds of natural disasters?
Are English movies in your country shown with subtitles or are they dubbed?
... and hundreds of questions to discuss with a partner, in a group - or alone. Yes, you can use these questions to practise on your own. Read the question and just start speaking as if you were talking to an imaginary examiner. A great way to warm yourself up.