I parked my car right here but now it's gone.It ____ .A must have been stolen B must have stolen

问题描述:

I parked my car right here but now it's gone.It ____ .A must have been stolen B must have stolen
C may be stolen
D must be stolen

A must have been stolen 一定是被偷走了能解释一下为什么是A么must have done是判断什么事情一定发生的巨型,车被偷了,用被动式,所以是must have been stolen