It's quite tough to reply on that one...actually your country of residence is Singapore at the moment but indicating that would result in your file ending-up in Singapore VO. Lying on the other hand can result in your application to be denied due to misrepresentation. I just wonder what others have done (who have their family living with them in the Middle East but have their application processed in Manila VO). In my case, I have written Country of Residence as Saudi Arabia and mailing address in the Philippines. I have indicated "MANILA" as the VO to process my application but CIO decided to send it to Abu Dhabi VO which is the nearest VO from the country of my residence which is KSA.