Who and Whom

To _____ did you send the tickets to the concert on Sunday?

• who

• whom

_________, if anyone, did he work with in designing dolls?

• who

• whom

Do you know anyone _____ has cookies?

• who

• whom

________ would have thought those dolls would become so popular?

• who

• whom

I will bring the peanut butter, but _____ will bring the jelly?

• who

• whom