Bio was random...RC was pretty tough too actually, I did search and destroy which seemed to have worked out well. If you get a tone question, or a 'what would the author...' etc. skip those questions and come back to them after you've skimmed a little more.
I used destroyer, TS, cliffs, and CDP. CDP is a must in my opinion. Cliffs is also very good, a good read and easy to understand and retain.