They are talking with a policeman.__ __ they __ ___?

你是要问翻译疑问句么?aren't they?怎么后面还有一个空?此题目共有四个空格，前面两个，后面两个，是改成特殊疑问句，谢谢指教！！who are they talking with?特殊疑问句就是以wh-疑问代词开头的问句，然后把句子的陈述顺序改为一般疑问句的顺序。