them · pronoun /ðem/
them (GROUP)
A1 used after a verb or preposition to refer to a group of people, animals, or things that have already been talked about
Dictionary example:
I've lost my keys. I can't find them anywhere.
Learner example:
S[ay] hello [to] your wife and children. I will have presents for them. (Skills for Life (Entry 1); A1; Portuguese)
them (TO AVOID HIM/HER)
B1 used after a verb or preposition to refer to a person when you want to avoid saying "him" or "her" or when you do not know if the person is male or female
Dictionary example:
When each passenger arrives, we ask them to fill in a form.