假如你是李华，你的朋友Bob每次遇到考试都会紧张。请你用英语给他写一封信，建议他如何克服考前紧张情绪, 比如平时努力学习

I’m sorry to hear that you are always nervous about tests. Here are some tips to help you.
First of all, study hard and make good preparations for exams. Second, why not go out for a walk or do some outdoor exercises before an exam? By doing this, you can relax yourself. Besides, enough sleep will make you full of energy and perform/do well in the exams. A warm bath or a cup of milk before going to bed might help you have a good sleep and listening to the light music is also a good way.

本文是一篇建议性文章，一定要注意一些表示建议性的句子。如虚拟语气的使用。另外，不要重复使用you should…; 表建议有很多句式，尽量避免重复。