Haha my mistake man. Where are you from again? Think of it like a normal SAT essay test, however it is conducted by the University. You show up and have 90 mins to write an essay based on either of their choices. It is just a test to make sure you have basic grammar skills. Like it says, all non-English native speakers must take it. So unless you have really broken English, which from your posts I can tell you do not, you should not sweat it.