___ in charge of the shopping center has upset him for quite some time.A.Left B.being left为什么选B不选A

问题描述:

___ in charge of the shopping center has upset him for quite some time.
A.Left B.being left
为什么选B不选A

这个句子缺的是主语
作主语的话就是 being left
整个主语就是being left in charge of the shopping center
我谓语是 has
选a的话就一句里有两个动词了.