you aren't supposed to know a lot of it. in state standardized tests like the ACT and SAT it's not a bad idea to go into the exam mostly blind. you need to find your areas for improvement, iron it out, and take it again
Yeah, and it's easier than it looks most of the time.
Just remember, there is a time limit, and you only get points deducted if you answer incorrectly. If you don't know the answer, don't guess.