Hi
read the entire question, and make sure you understand what exactly the question is asking (CASA love double negatives and making exams in to english tests!!!), then read all the answers, then jump in to your docs... you'll find the majority of the answers are verbatim copies of the regs.
Also, if you have Flight and Duty time rules memorised it will help you a lot.
It's not all that hard... just read the question.
Good Luck!