帮忙改定语从句

1.That's the hotel where We stayed last summer.
2.She is a kind perso with who Everyone likes to make friend .
3.I'll never forget the day when We worked together in London.
4.Can you tell me Why did you sell your new MP3 player?
5.Tge vys was surrounded by an angry crowd where Most of the bus was already full.

1.That's the hotel which we stayed there last summer.

2.She is a kind person whom everyone likes to make friend with.

3.I'll never forget the day when we worked together in London.

4.Can you tell me why you sold your new MP3 player?

5.Tge vys was surrounded by an angry crowd. Most of the bus was already full.
有问题

1.That's the hotel which We stayed there last summer.
2.She is a kind person who Everyone likes to make friend with her.
3.I'll never forget the day while We worked together in London then.
4.Can you tell me why you sell your new MP3 player?<