----Peter was so excited__he received an invitation from his friend to visit the 2010 Shanghai Expo.
问题描述：
----Peter was so excited__he received an invitation from his friend to visit the 2010 Shanghai Expo.
A.that Bwhy C when 为神马不选A?
答
so.that是如此.以至于.这里不是这个意思,不是说“他如此兴奋以至于收到了邀请”
而是说“当他受到邀请他很兴奋”
选c那不考虑so...that...，，这个从句为什么不能用that做连接词这是时间状语从句，应该用when