We would see the building___by trees when we got there that morning.

问题描述:

We would see the building___by trees when we got there that morning.
A.is surrounded B.surroundedC.to be surroundedD.surrounding

b
building 与surround是被动关系,所以用过去分词短语作定语为什么不选A因为句子不缺少谓语了呀,句子的谓语是would see,所以要选非谓语动词的形式