一道初一英语填空,用a,an,the来填 ,

问题描述:

一道初一英语填空,用a,an,the来填 ,
My family will go abroad during ______summer holiday!

My family will go abroad during ______summer holiday!
the为什么呢,有什么依据吗?一般情况下,这里用了将来时态就是说在不久的将来就要发生的事情,所以是特指,用the