My classmates are going to the Great Wall for vacation.(对划线部分提问）（划线部分：for vacation)____ ____ your classmates are going to the Great Wall?

My classmates are going to the Great Wall for vacation.(对划线部分提问）（划线部分：for vacation)____ ____ your classmates are going to the Great Wall?
My classmates are going to the Great Wall for vacation.(对划线部分提问）
（划线部分：for vacation)
____ ____ your classmates are going to the Great Wall?

My classmates are going to the Great Wall for vacation.(对划线部分提问）（划线部分：for vacation)____ ____ your classmates are going to the Great Wall?
Why are