If you do, you might as well find someone online (because no one knows you online) and tell him all the things you are afraid to say and are in a bad mood, so that your heart will be more comfortable. You can also find a subject you feel a little interested in to study, or have a method (suggest a correct attitude) to set a goal for yourself! If you want to get 0, how can you get it? That is, you know the answer is not right, but you can't take a chance, even if you have passed the exam, you will choose the wrong one. This method is a way to wait until you think it's important, because you learned to know the answer in order to get a 0 before, and now it's easy for you to choose the right one. This method is very dangerous if you don't keep a clear head. Don't try.