H(添什么?)of students in our school are h(?)class in a hall,now.括号内填什么?

问题描述:

H(添什么?)of students in our school are h(?)class in a hall,now.括号内填什么?
加翻译!

H(undreds)of students in our school are h(aving)class in a hall now.
翻译:我们学校的数百学生正在大厅里上课.