b2延期需补材料--求助

过我母亲b2延期，刚收到USCIS的信，需补材料：

submit proof that you have been maintaining your B2 classification. This may include,but is not limited to,receipts for attractions that you have visited,the names and addresses of those individuals you have visited and/or hotel receipts to show that you have been traveling the county.

可这半年，我母亲没有去过什么地方。 请教该怎么办？

多谢了！

所有跟帖： 

• 回复：b2延期需补材料--求助 -aus- ♀ (203 bytes) () 11/11/2009 postreply 11:54:55

• 回复：回复：b2延期需补材料--求助 -Nyjing- ♂ (103 bytes) () 11/11/2009 postreply 13:45:57