I did the air law exam 25 years ago and we had to write out the answers in freehand and then have an oral board to check our understanding. I wasn't a great follower of learning aids such as practice papers however they can change the questions slightly to confuse students, e.g. "at or above" or "above. My view is get the syllabus of what you have to learn and then write a question for each part of the syllabus on a flash card with the answer on the back and learn them. Don't try to learn just enough to pass, you must learn enough to get 100% and then if you have a bit of a memory loss on the day you might get 95%. I got 98% because I couldn't remember the definition of an "aeronautical ground beacon". So unfortunately you have to work harder, remember 70% is about the same as a first degree at university and how many students at uni get a first. Hope this helps.