出典:Tatoeba
As soon as the bell rang, the teacher came into the classroom.
Immediately after the bell rang, the teacher came into the classroom.
He lingered in the classroom after school was over.
As soon as the school bell rang, the students left the classroom.
As soon as the lesson was over, they rushed out of the room.
When he appears, the class is filled with a new spirit.
She was standing in the front of the classroom.
They trickled into [out of] the classroom.
As soon as he entered the classroom, our teacher burst into angry speech.