回复：better contact with IO. You might need file W-9 after

来源: 于 2006-04-17 08:00:49 [旧帖] [给我悄悄话] 本文已被阅读：次

you used AP, and status change F1 -> AOS. If IO do not care, you might keep F1, until you file a new W-9 for work.