Which indirect pronoun would you use for the parenthesized word?

I thank (them) every day.

nos
os
les

They tell (us) where to buy inexpensive jewelry.

le
nos
os

Did your sister give (you) the money?

te
le
nos

I’m going to buy (her) a birthday gift.

te
le
nos

John always tells (me) secrets.

me
te
le