London was chosen over other cities to host the summer olympics
London was chosen against Paris to host the 2012 Olympics on Wednesday 6th July 2005.
London was the host city for the 2012 Summer Olympics.
London will host the 2012 Olympics
Because it was in London.
London was announced as host of the 2012 Olympics on July 6, 2005.
In 2008, Beijing, China hosted the Olympics. London is scheduled to host the 2012 Olympics.
if a city can not host the Olympics it goes back to the previous host city i.e. if sochi can not host the 2014 winter Olympics it goes back to Vancouver if London is unable to host the 2012 Olympics it goes back to Beijing