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我6月份寄出了父母和两个妹妹共四个人的亲属移民申请表，随后大概两周吧，收到了四份移民局寄来的信说是收到了。
-Are all of these your relatives in China? If so, you may receive something from USCIS and NVC in about 6 months after you filed the application for your parents, but it is very normal if you don't hear anything from USCIS and NVC for your sisters' cases in 5 years.

然后一直到现在都没动静了。

我是要继续等待？还是要上什么网站查查？到底上哪个网站查？我国内的亲人也会收到移民局通知吗？下一步怎么办呢？