H1B 轉 F1 遇到困難，請大家幫忙

移民局要我補交下麵的材料：

1) Evidence that you have a residence in China to which you intend to return.
2) Statement that you have no intention of abandoning that residence.
3) Statement that you intend to depart from the U.S. after your studies.

哪位遇過類似經驗？請幫幫忙告訴一聲我應該準備些什麽材料？

非常感謝！