Dear Jack, 　
I’m really glad to hear from you and know how you are getting along. I know you go out to study abroad in the USA, and I know you don’t fit life there. I encourage you to have the faith to face the difficulties, and I have some advice to tell you. 　
For one thing, frankly speaking, you must know about the custom of local place, which will help you a lot to adopt their life. 　
For another, you ought to communicate more with the students of the USA, because it can improve your knowledge of the USA, and your English. 　
What’s more, you must join the outdoor activities. 　
Last but not least, you are supposed to pay attention to the manners of getting along with others. 　
I’m looking forward to hearing from you. 　
Get in touch! 　
　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 Yours, 　
　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 Li Hua