London 2012 Olympics

In 2012 London will host the XXX Olympic Games.
Watch the following video and answer the questions below.

1. How many times has London hosted the Olympic Games? When?
2. What was Dutch athlete Fanny Blankers-Koen's claim to fame?
   
3. Name at least seven sports mentioned on the video.
4. What country won the most medals at Beijing Olympics?
5. Name two well known athletes mentioned on the video.