I know that by now you've already passed your proficiency (congratulations) and been raised (even more congratulations) but, for any other brothers out there who might be seeking light with this same question...
Personally, I found it easier to question myself. I found that I couldn't really study on my own without the questions, so I was forced to question myself. While it wasn't required, by the time came to do my proficiency, I was so used to asking myself the question and giving the answer, that when being questioned by someone else, I got lost. It would be like trying to pick up in the middle of a lecture. Unfortunately, as it was a group proficiency, I was not permitted to question myself and found myself basically saying it all silently to myself until I got to the answer portion.