-Case by case. Normally it may take several months to one year.
-It will be sent to the petitioner because it is convenient for USCIS to that. But the form should be completed/signed by the beneficiary. The petitioner can be chosen as the agent.
如果只寄给beneficiary,那要寄到中国,可能要花费比较长的时间。请问有可能让NVC送电子邮件吗?
-It can be scanned and sent by email even if after it is been signed. Print it out using color printer.