首先感谢Pjiang昨天的回答，但是我还有疑问：先重复一下问题，问题如下：
Question about I-485 form. This question is in Part 3, B: Is your spouse applying with you, Yes or No?
If My wife doesn't file her document (together) with me this time, but she might accompany or follow to join a little later, how to answer this question, Choose Yes or No for this question? Specifically, My wife 的 I-485 不跟我的在同一个信封中， 但是会过一阵会file,象这种情况，怎么选， YES or NO?
(2) Is my understanding correct that I should choose "No" for the question since my wife's document is not in the same envelop with my document?
(3) If I choose "No", can my wife file her I-485 based on my case later on?
(4)If my wife can file later, and when she file and she needs to answer this question also, does she need to choose "yes" for this question?