题目内容：

You look pale.What are afraid of?-----选什么
A.To pass the dog B.The dog standing there
C.Pass the dog D.The dog is standing there
为什么选D

优质解答

提问用what,你就要用what（事物）回答.所以选择的是B.
standing there 是用分词作定语的,也就是说what这里是指The dog