It was a nuisance-----------( being kept/kept )waiting like that.

问题描述:

It was a nuisance-----------( being kept/kept )waiting like that.

being kept在此做主语,过去分词不能做主语

being kept

being kept ing的被动形式作主语.
很高兴为你解答!
请及时采纳哦!多谢你的问题!