Dear Petty,
亲爱的贝蒂：
I am happy to receive your letter and I am glad to hear that you have good days recently.
我很开心收到你的来信，得知你最近过得不错我很高兴。
I hope you can keep your happiness all the time.
我希望你可以一直保持快乐。
But I am not happy these days, because I feel great pressures.
但是我这些天不怎么开心，因为我觉得压力很大。
Two weeks ago, I caught a cold and then had a fever. I could do nothing in those days.
两个星期前，我感冒发烧，什么都不能做。
Therefore, I asked for leave for four days to stay at home. I came back to school until the midterm examination.
因此，我请了四天假待在家里，期中考试的时候才回学校。

I was not surprised that I did not do well in the exam.
我并不奇怪没有考好。
It makes me unhappy.
这使得我很不开心。
I worked so hard to prepare for it.
我这么努力准备考试。
My parents comfort me that I would be better if I had not been ill.
我父母安慰我说如果没生病的话我一定会考得更好的。
I hope I can recover soon. And I hope you can take good care of yourself.
我希望我能快点恢复，也希望你照顾好自己。
Sincerely yours, Kate
凯特