John was so sleepy that he could not keep his eyes ___参考答案是open,但_英语解答

John was so sleepy that he could not keep his eyes ___
参考答案是open,但我换opening可以吗,为什么?

人气：173 ℃　时间：2020-02-15 13:44:48

解答

不可以
open是个状态,把眼睛一直张着是个状态
opening是个动作,稍纵即逝