Notorize的话, 是要朋友自己去银行等么, 还是她们填完, 我们可以帮她们去notorize呢?那个letter of affidavit的格式是什么呢, 是不是张表格, 要在哪里下载呢?Do you mind I ask you how many you prepared when you went to prepare? Many thanks!