The news was spread throughout the country.

was 改为 has spread 本身为动词,不需要用was这个消息应经传遍整个国家。是现在完成时。spread的过去式spread过去分词spread 现在分词spreading 类似例句：。。。I know that idea has spread throughout the countryThe news has spread all over the country （that） the spaceship succeed in returning to the earth。