Your addressMonth， Date， yearReceivers addressDear …，
I am extremely pleased to hear from you. And I would like to write a letter to tell you that_____.
……
I will greatly appreciate a response from you at your earliest convenience/I am looking f0rward to your replies at your earliest convenience.
Best regards for your health and success.Sincerely yours， （实习编辑：阿依努尔）
