Teacher in front of blackboard 的in front of 可以换成before么

Stop talking ,the teacher is standing____ (in front of/in the front of) the class our teacher is standing __the blackboard.A.in front of B.in the front of Teacher in front of blackboard 的in front of 可以换成before么 the teacher stands in什么 front of the classroom The teacher is in the front of the class改错 The teacher's desk is （）the classroom A.in front of B.in the front of C.in the front D.front of The teacher is standing__the class an giving his lessons.A:in the front of B:at the front ofC:in front of D:at the front My teacher is teaching us English___ us.是in front of 还是in the front of 应该是in front of外部吧. There is teacher's desk ____ our classroom.And three trees ___ our classroom,too.A.in front of;in front of B.in front of;in the front ofC.in the front of;in front of D.in the front of;in the front of there is a teacher's(teacher) desk in front of the reading (read) room. ____teacher standing in front of our classroom is ____excellent teacher of our school. 改病句The teacher is standing in front of the classroom in class in front 与in front of 区别 in front of 造句 in front of bedroom The teacher is standing in front of the blackboard.有错误码?是不是应该加in the front of...这样的话，The teacher is standing in the front of the blackboard,也成立？ The teacher is standing in the front of the classroom.（改为同义句） 提示The teacher is standing in front ____ ____　____　. There is a blackboard____our classroom.Our teacher was stauding the blackboard at this time yesterday.A.in front of;in the front of B.in the front of;on C.in the front of;in front of D.in front of;on