We received your application to sponsor xxx on February 15, 2013.
We sent you a letter on March 13, 2013 about the decision on your application. Please consider delays in mail delivery before contacting us.
We started processing xxx application on April 17, 2013.
Medical results have been received.
A decision has been made on xxx application. The office will contact xxx concerning this decision.
麻烦帮我加一下进度吧