正在换十年绿卡，3底已经收到了I-797收据，上面说我的临时绿卡有效期延长一年，打完指模都已经5个月了，不知道还要等多久，如果我过年想回国，是不是拿着过期的绿卡和这个收据就可以回国，会不会回来的时候不让入境美国。
-You need to bring the receipt and your passport to the local USCIS Office to get the green card stamp on your passport and then, use that stamp to travel and work.
还有疑问就是上面说绿卡有效期延长一年，那么这一年有效期是算绿卡上的时间，还是收据上的时间？
-It is from the date of your conditional green card expires.
-You need to bring the receipt and your passport to the local USCIS Office to get the green card stamp on your passport and then, use that stamp to travel and work.
还有疑问就是上面说绿卡有效期延长一年，那么这一年有效期是算绿卡上的时间，还是收据上的时间？
-It is from the date of your conditional green card expires.
