今年以来月递交F2转F1的申请,3月31日的RECEIPT,到现在还没有消息,去过网上查STATUS,答复"Your I539 APPLICATION TO EXTEND OR CHANGE NONIMMIGRANT STATUS was received on March 30, 2004. We mailed you a receipt with information about processing. It is taking between 60 and 90 days for us to process this kind of case. We will mail you a decision as soon as processing is complete."
请问有经验的朋友,我该怎么办?十分感谢.