I tink he meant where r the nice places to go in sgp to take those grad photos lehh ..
the more common ones are city hall, fort canning park, botanic garden .. very standard kinda background but if u want something different or crazy then i suggest takin at the citylink during the wee hrs of the day ...
Have you considered blurring the background? If it is out of focus, it would 1) not distract from the person and 2) the exact place where to go doesn't really matter so much. Personally, I like some greenery.
If details are visible in the background, I think it would make sense to chose a site that can be readily identified as/associated with the university.