【正确答案】[参考范文]
Dear Frank，
How glad I am to hear from you!
This time I have an exciting thing to share with you．Last Friday I received my visa to the USA．To be honest，I have dreamed of being in the USA many times．As a college student majoring in American History，life in America will certainly do much good tO my understanding of the history，culture and tradition of America．What’more，I have a good friend—you—there．I’m sure that meeting you in your own country will be a memorable experience．
I’ll arrive at Chicago on the morning of August 15．I really can’t wait the day to come!