The president made a speech ________ he expressed his satisfaction.

问题描述:

The president made a speech ________ he expressed his satisfaction.
A.which B.where C.in which D.in that

选C为最佳,如选B,则把speech看做抽象的地点,在英语中,可看作抽象的点的词主要有:case point,job,degree,situation ,reception ,activity,position.不能把speech看做抽象地点