1st time use GC, shall I hand in I-94?

I just got GC, plan to go to China next month. Do I need to hand in I-94 when I leave U.S.?
Thank you very much.

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It's up to you, either hand in or not -貴在堅持- 給 貴在堅持 發送悄悄話 (446 bytes) () 03/31/2012 postreply 06:55:22

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