When we learned over the radio that the Autonomous Prefecture of Yushu（此处加 was,应该用被动语态,看介词by） hit by a terrible earthquake on the (去掉,习惯用法.此处不用冠词 )April 14th,2010,killed（改为killing,现在分词做结果状语） more than2,000 people,we became very worried.It is said that many houses were ruined,so you couldn't have your classes as usually（改为usual,as usual 像通常那样）.I wonder if things have improve（改为improved,现在完成时） by now.
As for yourself,don't give in（改为up,give in 屈服让步,不及物动词短语；give up 放弃） hope and be strongminded when facing the great difficult（改为difficulty,形容词great应修饰名词） because of people all over the country is（改为are,主语是people） standing by you.And please keepin touch with me and I will try my best to help you.Beside（改为Besides,副词,此外,而且）,the government is trying to
help the people in the disaster-hit areas rebuild their home.I believe the day will soon come that you overcome all the difficultes and live the（改为 a .live a ...life过着...的生活） new life.
Hope to get your early reply.