介词+关系代词1.The tower is 40 metres high,on the top ( )which we

介词+关系代词
1.The tower is 40 metres high,on the top ( )which we can see quite a large part of city.
2.The fox( )which the chicks were killed was shot.
3.Those spades( )which we had planted many trees went out of use .
4.That's the question ( )which the class will have a discussion.
5.It raind all night and all day,( )which time the ship broke into pieces.
括号中填 介词 这几题我对自己的答案没有信心 请大家帮忙 谢谢了