All the public facilities require continuous spending on new equipment and new development if they are to serve us properly, requiring more money than, ( )through taxes alone.
从句中的省略。分析句子意思“如果我们想要所有的公共设施更好地我们服务,就需要不断投入新的设备和进行改善,所以单独由税收所筹集的钱是远远不够的”和结构可知,如果将此处还原成完整的句子应为requiring more money than it is raised through taxed alone,从句中省略了主语it,B选项正确。