The students are talking about the cartoon b_____ciass.

问题描述:

The students are talking about the cartoon b_____ciass.
横线上填什么?为什么?

before 在...之前.
句首是:在上课之前,学生们在讨论着这部动画片.
祝您学习进步,更上一层楼!O(∩_∩)O