Have you ever before applied for permanent resident status in the U.S.?
应选 Yes 还是 No?
楼下两位建议选No。 但在置顶的【修订版】系列之二：手把手帮著填 I-485 和 G-325A
(http://web.wenxuecity.com/BBSView.php?SubID=immigration&MsgID=328545)
里说
Have you ever before applied for permanent resident status in the U.S.?
[No] 你既没有填过 I-140，又没有填过 I-485
[Yes] 主申请人填过 I-140，或副申请人填过 I-485
到底是怎么回事?请给讲讲。谢谢啦!