Internship interview...what to expect/a few questions

Have an interview next week for with a canadian investment bank, its in the debt capital markets division. I have had plenty of interviews before but never in this field, and have heard they are very tough.

Any insight anyone can add would be great... I'm assuming I should expect behavioural, technical and brain-tease questions?

Should I make a point of having an opinion on the economy, greece, eurozone, or is that something they'd even bother asking to an intern knowing full well I'm just regurgitating something I've heard or read?

Its 6 days away and its all I have on my mind, thanks guys.