If the previous director had paid enough attention to the po

选B。would have been solved这是if从句虚拟语气的固定用法。如果if从句中用的是一般过去时,主句要用would + 动词原形；如果if从句中用的是过去完成时-had + done,主句要用would + have done。这些都是一一对应的,固定用法。意思如果已经做了----,结果会是----样,其实结果并不是这样的,表示虚拟