急问小白兔等专家父母签证延期可以填一张申请表(I-539)吗?如果填一张表,费用是200还是400?申请时一定要附回程机票吗?多谢各位。
急问小白兔等专家父母签证延期可以填一张申请表(I-539)吗?如果填一张表,费用是200还是400?申请时一定要附回程机票吗?多谢各位。
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