Multiple Choice + Javabat: Recursion

I could only confidently answer 11 of the 21 multiple choice questions. Recursion is still very fresh to me, and I have many doubts and concerns.

This is in part because I can't understand most of my errors. Many of my errors seem to defeat my prior computer knowledge when I check the answers. I'm hoping we will review the answers, so that I'll see where I'm lacking in knowledge.

I used run-time stacks where I saw fit, but I doubt that my errors had to do with the recursion concept. Although in many cases their run-time stacks were different from mine.

I've done 9 of the 10 required recursion codingBats because I have some serious syntax errors when string problems kick in. So far the recursion problems from the book have only confused me more than I already was...

As for what I don't understand... well- I could spell out a list...?
1. How do strings work with recursion (syntactually)
2. When a print call is made in the same body as a recursive call, why does the print method ignore the recursive call (that's what I observed from the book)? Or rather, how do they work together? *URGENT*
3. Run-time stacks- how to keep them neat when you come across a huge tree of stacks?
4. There is more, but much of it is uncertainty. Going over recursion in class will help LOADS.