when I got home ,I found the gas ( ),but the door remained ( )

问题描述:

when I got home ,I found the gas ( ),but the door remained ( )
A.burning ;locked B.burning ,locking C.to burn ,to luck D.burned ,locking
望说明原因,

A.burning ;locked
现在分词表示正在进行的动作,过去分词表示被动与状态