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提交follow to join 485 时，能不能选在主申请人的485还在pending期间？

-Yes, the derivative can file I-485 during the primary applicant's I-485 is pending as long as the priority date is current.

假设副卡 follow to join 485 刚刚提交不久，主申请人就绿了。这种情况下，uscis会不会因为副卡 485在交表时主申请人还没有绿，就直接锯掉，

-No. But it will not be approved until after the primary applicant's I-485 is approved.

还是会在review材料时，查询到主申请人的最新状态已经绿了，给approve?