关于定语从句的问题

1、I will remember the days in which I worked on the farm.
2、The plane was badly delayed, which made the passengers very angry.
3、Dr. Yuan is a great scientist from whom we can learn a lot.
4、We are collecting money for the boy, whose house was damaged by the fire.
5、The students went to the museum last Sunday, where many famous paintings were being exhibited.

1 I will remember the days when I worked on the farm.
2 The plane was badly delayed , which made the passangers very angry.
3 Dr Yuan is a great scientist from whom we can learn a lot
4 We are collecting money for the boy, whose house was damaged by the fire.
5 The students went to the museum last Saturday, where manu famouse paintings were being exhibited