When I went into the room,I found it ______already.

问题描述:

When I went into the room,I found it ______already.
A is cleaned B was cleaning C has been cleaned D clean
我觉得C和D 都可以啊

不能选C .发现用 found过去时,显然是在发现之前就干净了,过去的过去用过去完成时才对,选 D,find 的复合结构 ,clean,形容词 干净的,作补语