请问8老师给父母办绿卡的问题：
1. 关于体检693表格： 因为父母其中一位的身体原因，要过几个月才能做体检。这样的话，是俩个人都先不递交693，还是一方先交693？ 只交485不交693可以吗？
-These two cases are irrelevant to each other. So, you had better provide all of the required documents at one time for either case, if possible.
2. 关于864的近三年的税表，如果递交的时候还没报税，可以就用2014，2015和2016年的税表吗？-You must provide the copy of tax return of 2017.
3. 父母入美国两个月不到，可以开始办绿卡吗？-Had better wait for 2 to 3 months.
4. 关于131表格：需要填part 4吗？ 因为 第２页part ３下面有一句：if you are applying for a non-DACA related Advance Parole Document, skip to Part 7;
-You are applying for a non-DACA related Advance Parole Document, so you skip to Part 7 (i.e. your AP application is non-DACA related).
谢谢！
