用介词或介词短语提问:

问题描述:

用介词或介词短语提问:
1.The aeroplane is flying_____thevillage.
2.The children are swimming_____the river.
3.Two cats are running _____the wall.
4.The boy is jumping _____the branch.
5.The teacher is standing_____the blackboard.
6.The blackboard is_____the teacher

over
in
along
off
in front of
behind