I have already sent a mail to our s

I have already sent a mail to our superior for approval.

Results (Chinese) 1:

我已经把邮件发给我们上级领导审批。

Results (Chinese) 2:

我已经发邮件到我们的上级审批。

Results (Chinese) 3:

我已经发邮件给我们的上级领导审批。