Who vs. Whom
who
Morgan believed that the person (who/whom) was at the school last night was in 7th grade.
who
Sally asked (who/whom) was going on the field trip tomorrow.
who
She wondered (who/whom) her secret admirer was.
whomever
This instrument belongs to (whoever/whomever)'s name is on the tag.
whom
To (who/whom) this letter is for, i cannot tell.
who
We all deserve to know (who/whom) took all of the ketchup in the cafeteria.
who
I do not think that we belong in a group with the person (who/whom) has been very rude to us.
whoever
I think that we should bring the wallet back to (whoever/whomever) dropped it.
whom
If the train kept going, it would run into a person (who/whom) he did not know.
who
If you can get a 100% on this quiz then you know someone (who/whom) is good at grammar.