What your teachers usually ___(eat) at the Double Ninth Festival?

What your teachers usually ___(eat) at the Double Ninth Festival?
What your teachers usually ___(eat) at the Double Ninth Festival?

What your teachers usually ___(eat) at the Double Ninth Festival?
What does your teachers usually _eat__(eat) at the Double Ninth Festival?
前面少个空格吧,应该加does
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what do your teachers usually eat at the Bouble Ninth Festival?意思为：你的老师们在重阳节通常吃什么？（句子疑问词What 之后还应加上助动词do）