【正确答案】Dear Mike,
I am delighted to know that you are about to take the College Entrance Examination. It is of course a crucial time for you. I'd like to tell you that I am willing to help you go through this and achieve satisfying results in the exam.
I can imagine that you must be under quite a lot of pressure right now. It happened to me as well when I was preparing for the exam. An effective way to deal with the pressure is to take a deep breath when you feel stressed and think about things other than study and exam. Doing sports or hanging out with your classmates for a while will be nice choices. They will help you relax and treat the exam with a normal attitude.
Please try the methods I mentioned above. I am sure that you will be fine and pass the exam successfully. I am looking forward to your good news!