There are 36 classes in our school.(对划线部分提问)

问题描述:

There are 36 classes in our school.(对划线部分提问)
划线部分:36
应该是:How many classes are there in your school.没争议
但划线部分是:36 classes 时候
应该是什么呢?是同上 How many classes are there in your school.
还是:What's in your school?
还是:what are there in your school?

1.对
what are there in your school?