( CNN ) -- We 're just four months away from the London Olympics and the city is nearly ready to greet thousands of athletes and millions of visitors . As part of CNN 's coverage of London 2012 , World Sport presenter Don Riddell will be presenting a live webcast on CNN.com and CNN iPhone and iPad apps on Wednesday at 5.30pm GMT , 6.30pm CET , 1.30pm ET . Living and working in London , Don has reported on the Games since the British capital won the vote to stage the sporting showpiece in 2005 . What do you want to ask him ? Is London ready ? Will the city cope ? Are there any spare tickets ? Can anyone beat Usain Bolt in the 100 meters ? Will the Thorpedo make a triumphant return to the pool ? Send your questions about the 2012 Olympics via Twitter to @ donriddellcnn or leave your queries in the Comments section at the bottom of this page . Watch the webcast here or on CNN.com International .
2012 the London Olympics in London Wednesday away . Pose your questions on the Games to CNN Riddell . Don Riddell hosts a live webcast on CNN.com , CNN iPhone and iPad apps Wednesday .