The 30th olympic games,offically__as "London 2012 oympic games",will take place from July 27 to august 12.这题为什么用known?

It held the 30th Summer Olympic Games. London is making________ for the 30th Olympic Games.(prepare) The 30th Olympic Game will be held in London,the c____city of England The 30th Olympic Games( )in london in 2012 A was held B were held London will host the 30th Olympic Games in 2008.3Q急用 The 30th Olympic Games will be in London in 2011. Where___(be) the 30th Olympic Games going to be held? the coming 30 th olympic games will be held in ___this year. how long will the 30th Olympic Games be_____注意一下be When will the 29th Olympic Games open?（回答问题）Where will the 29th Olympic Games open?How long are the 29th Olympic Games? The _____organic Olympic Games will be held in Beijing in 2008A.27th B.28thC 29th D.30th China held the 29th Olympic Games in Beijing. Beijing will h_ the 29th Olympic Games The 29th Olympic Games will held in Beijing.改错 The 31th Olympic Games_____in Brazil in 2016.(hold) When did the 29th Olympic Games begin? The 29th Olympic Games lasted(持续) sixeen ____ (day) the 30th Olympic Games中的the是因为特指这次奥运会,还是因为在序数词前呢?