Dear feiend,
I offer my warmest congratulations on your promotion to be admitted to a university。I know how talented you are and how hard you've worked to attain this goal. How exciting it must be for you to realize your ambitions after all those years of hard working. It's been a real encouragement to me to see your efforts rewarded.
Sincere congratulations to you.and You will spend 18 years old 。In this ,Early to wish you a happy birthday .
I wish you still further success.Our friendship is everlasting and unchanging 。
Sincerely yours,
Tom