Dear ***,
Hi,I got your letter two days ago,and I am sorry I can't reply to it earlier.I'm very glad to hear that you're going to study abroad.That's great!Studying abroad can have many advantages.First,it can enable you to recieve a better education and gain more knowledge.Second,it can expand your horizons and make you learn more about the different customs and culture of other countries.Third,you can make more friends and improve your English.Hower,there will be some problems.Because of the differences of the backgrounds,you may feel confused.What's more,you may have difficulty in communicating with others,and it will cost you a lot of money.So,before making such a decision,you should have a good consideration.
best wishes for you
Yours
***