They're going to the Great Wall next week.(对划线部分提问）划线部分是next week.
问题描述：
They're going to the Great Wall next week.(对划线部分提问）划线部分是next week.
答
When are they going to the Great Wall?
祝你学习进步,更上一层楼!(*^__^*)
有不会的可以再问我:）