it doesn't matter who/whom it is I'm talking to填who or whom?

it doesn't matter who/whom it is I'm talking to填who or whom?
it doesn't matter who/whom it is I'm talking to
填who or whom?

it doesn't matter who/whom it is I'm talking to填who or whom?
whom 最好 不过who 也是可以的,在口语中 .没有whom规范

whom

whom