there is a bus every five minutes?对every five minutes 提问怎么写?

How often
对频度副词提问 用how often
多久一次
再问： 麻烦给个完整的句子。感觉how often is there a bus 不对呢。
再答： How often is there a bus？没错 特殊疑问词加一般疑问句 构成特殊疑问句