The days of question spotting are probably over.
Why?
There is no "central question bank" for PPL exams but it's always in the commercial interest of the training industry to generate a QB, because most students can't get far until they hae done the exams, so that impacts the school's cash flow.
That's why the FTOs generated their own QBs, long before the JAA CQB was released under the FOIA.