i got to the classroom first this moring .I found the door____was_英语解答

i got to the classroom first this moring .I found the door____
was opening/ was open/ was opened/has opened,选哪个

人气：346 ℃　时间：2020-02-04 04:08:48

解答

was open,用形容词表示开着的状态为什么不是has opened，也一样啊主语是door, 怎么可能发出开门的动作？