尊敬的8老师：
http://travel.state.gov/content/visas/en/immigrate/immigrant-process/interview/prepare.html
我在上面这个地方学习《Prepare for the Interview》，
在面签要准备的材料列表中，有下面的话：
□ EVIDENCE OF SUPPORT: The Consulate requires evidence that demonstrates you and the members of your family who will accompany you are not likely to become public charges after immigrating to the United States. Please prepare the documents listed below for your visa category. Even if you comply with these requirements, a consular official may at any time require additional evidence to determine your eligibility. Immediate relative (CR/IR) and family preference (F) cases: An original I-864 (or I-864EZ, if applicable) signed by the petitioner must be submitted with his or her most recent Federal income tax return.
我的问题是：864表的原件已经寄给NVC了，我手中没有原件啊，这可怎么办呢？
另外，这些材料列表，我是否要按照材料列表的顺序排列好这些文件？
还有个问题是：
12月4号收到了让父母去广州面签的通知，12月16号我们搬家。
此前填写的父母来美国后的住址，全是我搬家前的。父母这个月面签后，进入美国时，填写的美国住址，可以不可以还写我没搬家前的地址？
非常感谢8老师！
面签的日子近了，心情很紧张，离成功不远了，8老师辛苦了！！！