改为一般疑问句：The meeting has been on for fifteen minutes.The meeting has been on for fifteen minutes.改为一般疑问句._ the meeting _ _ for fifteen minutes?_代表一条横线,这是人教版（仁爱英语）九年级上册练习册
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改为一般疑问句：The meeting has been on for fifteen minutes.The meeting has been on for fifteen minutes.改为一般疑问句._ the meeting _ _ for fifteen minutes?_代表一条横线,这是人教版（仁爱英语）九年级上册练习册
改为一般疑问句：The meeting has been on for fifteen minutes.
The meeting has been on for fifteen minutes.改为一般疑问句.
_ the meeting _ _ for fifteen minutes?
_代表一条横线,这是人教版（仁爱英语）九年级上册练习册的一题.
拜托把解题思路也写出来,
改为一般疑问句：The meeting has been on for fifteen minutes.The meeting has been on for fifteen minutes.改为一般疑问句._ the meeting _ _ for fifteen minutes?_代表一条横线,这是人教版（仁爱英语）九年级上册练习册
Has the meeting been on for fifteen minutes?
has是助动词,不是直接提前嘛?
以上 ZOE
Has been on
把助动词has 提前，其他不变 就可以了
Has the meeting been on for fifteen minutes?
就把has提前就可以了。
Has the meeting been on for fifteen minutes?
一般疑问句就把 问句里的 has提前， 然后后面形成一个陈述句