21-10AS 文法 Q26

本句考查标点符号和句子结构。
原句是省略了that的定语从句，正常语句应为"One employer to have seen the positive results that gamification can bring is the United Kingdom's Department for Work and Pensions(DWP)."，这里that在定语从句中做宾语，因此被省略。that前为主句，is是主句的谓语动词，中间无需加入任何标点。