In which or which

[ratóncolorao]

Hello,

I am not sure if it would be possible to place the preposition "in" at the end of the clause in the following example:

These are the books in which my mum keeps her jewelry.

Thus:

These are the books which my mum keeps her jewelry in.

Might it be possible to omit the preposition "in"?:

These are the books which my mum keeps her jewelry.

Thank you very much for your help.

 

[5jj]

These are the [STRIKE]books[/STRIKE] boxes which my mum keeps her jewelry in.

That's fine.

These are the [STRIKE]books[/STRIKE] boxes which my mum keeps her jewelry.

That isn't.

I assume your mother did not keep her jewelry in books.

 

[emsr2d2]

I assume your mother did not keep her jewelry in books.

I think you're probably right but there are some clever ways of hiding your jewellery: Sincerely, Kinsey: Jewelry Box | DIY