综述:Teacher: class!
Monitor: stand up!
The students stood up quickly.
Monitor: Hello, teacher!
Students: Hello, teacher!
Teacher: Hello, students!
Monitor: sit down!
The students did a good job quickly and began the class.
老师:上课!
班长:起立!
同学们迅速站起。
班长:老师好!
同学们:老师好!
老师:同学们好!
班长:坐下!
同学们迅速做好,开始上课。