The teacher set so difficult an examination problem( )none of us worked out 这个空应该填啥?

问题描述:

The teacher set so difficult an examination problem( )none of us worked out 这个空应该填啥?
有没有容易混的填法?比如几个相近的单词?

in a way that; so that; so as to that怎么区别啊?