The students left the classroom after they said goodbye to their teacher(句意不变)
问题描述：
The students left the classroom after they said goodbye to their teacher(句意不变)
答
学生们离开教室在他们对他们的老师说再见之后（望采纳
答
学生们在对老师说再见之后离开了教室
答
The students said goodbye to their teacher before they left the classroom.