It's always important to practice your interview answers, or to role-play an interview, before your actual interview. Practicing your answers means that you will be less nervous, more confident, and more effective at selling yourself for the job. If English is your second language, this is even more important. Practicing means that you will say what you mean to say, and you will be able to deliver your answers smoothly and confidently.
If English is your second language, here is an excellent tool to help you practice your job interview answers:
This series consists of 50 different videos where I ask a job interview question that you can answer on your own, and then you can play my answer. Compare both, and easily see how to improve your answers immediately. These are the answers that will get you hired.
I've been hearing many comments from folks who aren't as comfortable with English telling me that they love this tool. I encourage you to give it a try and see for yourself.