高一英语定语从句1.l bought a dress yesterday .The dress fits me well

高一英语定语从句
1.l bought a dress yesterday .The dress fits me well
2.l lost a package .The package contained a birthday present.
3.l borrowed a book from the library .It is about ancient paintings.
4.Martin chose these trousers.The trousers tore when he put them on
改为定语从句
为什么不是 a package which l lost contained a birthday present
a dress which l bought fits me well
a book which l borrowed is about ancient paintings