我OPT 2月过期的，在之后的60-day grace period 期间（4月初）申请了B2 旅游签证，理由是好朋友的phd毕业典礼在8月，申请后status是pending， 合法的。昨天收到移民局让我补充一些材料：

1 submit a statement in which you describe ur intention concerning departure from US.

2 submit evedence to establish that you have made arrangement to depart tht US upon completion of your temporary stay in US. 比如机票

3 Regulation require that B2 must establish that she has a residence abroad which she has no intention of abandon. 比如电话账单，水电单等，还需要翻译成英语。

请问我是需要自己找个律师还是要自己写这些材料呢？ 我被拒的可能性大吗？

我现在还有可能申请回F1么？谢谢