To determine what to study, one should first A. organize study timeline. If you are organized, and have notes on what subjects you need to study, and allocate your time in order to do so, then you won't have a problem figuring out what you shoul study first. For example, if you write that you have to write history for 2 hours because your test is in two days, and you also write that you should study geography for an hour for the test next week, obviously you are going to start with history because it is more urgent.
