Question

The athlete’s family came to Beijing in August,2008 to watch him play.That was     
_____they began their contact with the  large country with a long history.?

A．in which

B．at which?

C．why

D．when?

Answer 1

D?

 考查名词性从句。句意为：那个运动员的全家在2008年8月来到北京观看他比赛。那是他们和这个具有悠久历史的大国的接触的开始。“介词+关系代词”不能引导名词性从句，可排除A项和B项。根据语境，空白处表示时间，应选when。