it is in beijing __ the 2008 olympic games will be held
问题描述：
it is in beijing __ the 2008 olympic games will be held
为什么要用that?而不用which?where?
答
因为是强调句.强调句的特点是,去掉句子结构（it is...that...)原句子还能保持完整去掉以后就是 in Beijing the 2008 Olympic games will be held.调换下句序就是the 2008 Olympic games will be held in Beijing....