This isn't going to help you pass the exams, but it may be helpful knowing the structure. Among the improvements is providing 5 answers to all multiple choice questions. Eliminating "none of the above," "all of the above" and "A and B (etc.) only" answers. The intent is to have one correct answer and 4 detractors (wrong answers), with at least one of the detractors very close to the correct answer. This isn't much different than other multiple choice exams except maintaining consistency AND giving you 5 answers to choose from.
Of the things to remember when answering multiple choice exams is to NOT to see or read any of the answers until you have read the question. The first couple of answers (if seen) will influence your answer as you read the question. Remember that at least one of the first two answers is WRONG.
No matter what type of question you are answering, statistically, your first answer is your best answer and more likely to be correct than what you might change it to so be sure of yourself if you change an answer.
It is normally best to go through an exam and answer all the questions you know straight away. This relieves/clears your mind of "ready knowledge" and gets your brain pumping for the deeper, more difficult questions. Just be darned sure you don't forget to answer ALL the questions and be careful keeping your answers in proper order on answer sheets.
These tips might give you enough of an edge to pass an exam you might've failed by a question or two.