I am writting to tell you good news. With your kind help, I have been accepted to the Tokyo University. I really don’t know how to express my thanks to you.
Now I’m studying Japanese so hard becasue I’m certain that I will visit Japan in the future again.
I am writting to tell you～
I am writting to tell you my final decision.
I am writting to tell you that I received it
In reply to your letter on April 21st, we are really sorry that we will be unable to accept your application in May becasue we are at our busiest at that time of the year and we shall be shorthanded.
We thank you for your interest in our activities.
In reply to your letter
I am writitng in reply to your letter of June 14, we are pleased to inform you the good news.
This is in reply to your letter of June 14, requesting help.