Who are those people walking along the street with banners?A group---the league for global Environment Protection.
问题描述：
Who are those people walking along the street with banners?A group---the league for global Environment Protection.
A calling B called C called itself D is called
答
选B group后面的成分做后置定语修饰group,所以要用非谓语动词,因此可排除D.由于call与group是被动关系,所以排除A.而C明显的时态不对.综上选B