A good way to pass an exam is to work hard every day. You may not pass an exam if you don't work hard for most time and then work hard only a few days before the exam.

      If you are taking an English exam,do not only learn rules of grammar. Try to read stories in English and speak English whenever you can.

     Before you start the eaxm, read carefully over the questions. Try to understand the exact meaning of each question before you pick up your pen to write. When you at last finished your  eaxm,read over your answers.Correct the mistakes if there are any and make sure that you have not missed anything out.