The type of pronoun is used to show the connection between the antecedent and the subordinate clause of a sentence is a relative pronoun. Relative pronouns are used to link a clause or phrase to a noun or pronoun. Hope this helped!
Jem and Scout agree to leave the items for a few days before taking them, just to make sure the gifts are for them. Jem believes the gifts are from Boo, but he isn't sure..... at least until Mr. Radley fills up the hole.