That smiling young man ———— at the entrance to the room is very good at communicatingA.stands B.standing c.standing D.stands 为什么选C 麻烦分析一下句子,

That smiling young man ———— at the entrance to the room is very good at communicating
A.stands B.standing c.standing D.stands 为什么选C 麻烦分析一下句子,

此句的谓语动词是is,一个句子中不可能出现两个谓语动词,所以不能用stands,C选项表示一种伴随的状态,是非谓语动词做后置定语,站的动作是这个人主动发出的,所以不能用standed