the students all stood up when the teacher.进入 The classroom

the students all stood up when the teacher.进入 The classroom The students all stood up ____ the teacher came in. When the teacher came into the classroom,all the students st When the teacher comes into the classroom,all the students s When the teacher comes into the classroom,the students all s When the teacher came into the classroom,the students _____( When the teacher came into the classroom,the students ______ When the teacher entered the classroom,he found the students When the teacher came into the classroom, the students ____ 1.When the students came into the classroom,the teacher ( ) when the teacher came into the classroom,the students were ( When the teacher came into the classroom, the students _____