回复：请教pjiang等高人，父母刚拿到 B2 签 证，买机票事宜

来源: 于 2008-04-08 08:38:44 [旧帖] [给我悄悄话] 本文已被阅读：次

1,2: no, but it is said better to buy round-trip,
3: yes, usually nowaday, may ask them email you a copy to double check.
4: no.