The cream ____the bread has gone bad.

问题描述:

The cream ____the bread has gone bad.
A.adding B.adding to C.added to D.added up
为什么选C?

The cream __added to__the bread has gone bad.加到面包里的奶油已经坏了.
此处用过去分词,当形容词用,表示“已经加进去的”.A、B用现在分词不合句意;D的意思是“加起来”,也不通.