The Internet is a great place to look for some of the more common questions asked at interviews. Take a look at these as a starter:
Lots on interviewing, eg: http://internships.about.com/od/interviewing/Interviewing.htm
Here are a few questions you might be asked if you are specifically targeting an internship abroad:
Why do you want to work abroad (or in X country)?
What will you gain from the experience of working abroad?
Explain a time when you were abroad and has to deal with stress. How did you deal with it?
How do you cope with being abroad for a long period?
What was the most memorable difference in culture you experienced and how did you deal with it?