:) Hi! I would like to add something to rehoot's suggestions: When guessing, try to do that at the second part of the section. Failing many questions at the beginning of a section is what ruines the score the most. So, having too little time to make significant improvements, I would say that it might be a good idea to work more carefully at the beginning: obviously, If you have no idea about the answer or the way to attack a problem, just guess without wasting time. Good luck.