定语从句修改

问题描述:

定语从句修改
(1)This is the reason which his parents gave him the money to buy it.
(2)He always spends the whole day in the shop that he reads English novels.
(3)Do you remember the day that you first met at the school English corner.
(4)I'll never forget the moment which I heard him speaking English.
可以添加删除

1.which-why
2.that-where
3.that-when
4.which-when