Yeap, I also second the opinion to put your house address, or your rented place's address, and that address should validate right after that.
Or if you can find an abandoned house which you have access to the mailbox - that would do as well.
Or have a virtual office address - there are those that are in the shopping mall or office district, which you should be able to use those addresses accordingly. It just take 1 month to validate the address, so just 1 month's rental or perhaps 2 if there's a delay.