为我父母一起申请 绿卡，我准备 130 485 同时递交。 485 父母各填一份 ， 各交1份钱， 130 呢？ 也父母各填一份表，各交一份钱吗？864 各填一份？ 邮寄的时候一起寄还是分开寄？
485 的一些填表问题：
485 Part 1
16 travel document used last arrival？
什么是travel document? 护照号还是签证号？
24 what is current immigration status (if it has changed)
来了以后，没有改过移民什么，是空着 还是 写visitor？
Part II
2 Are you applying for adjustment based on Immigration and Nationality Act (INA) 245 I
Yes or NO? 选 什么？
3 &4 . If you are the principal applicant, provide the following information
Receipt Number of Underlying Petition (if any)
Priority Date from Underlying Petition (if any)
5-9 If you are derivative applicant (the spouse or unmarried child under 21 years of age of a principal applicant), provide the following information for the principal applicant.
Principal Applicant’s name
A number
Date of birth
什么是principal applicant? 而且也没有什么 receipt, 这里是问什么号？
问题比较多。先叩谢各位耐心读完， 要是能回到一些更加感激。