This is the apartment ___ my brother bought last month. (who / which)
which
Here's the book ___ you asked for. (that / who)
that
Those ___ cannot show valid ID will not be able to proceed to the next step. (who / which / that)
who
The tornado ___ hit Minnesota was extremely powerful. (who / which)
which
She's finally arrived in the city ___ she's been dreaming of (who / which / that)
that