ADJECTIVE CLAUSES WITH OBJECT RELATIVE PRONOUS WHO, WHOM AND THAT

Relative pronouns are used at the beginning of an adjective clause (a dependent clause that modifies a noun). The three most common relative pronouns are who, which and that. Who has two other forms, the object form whom and the possessive form whose. Who and whom are used mainly for people. 

Excersive:

- The people who live next door are good neighbors

- The cake that she bought was delicious

- The Leaders whom we elected will commence work next week.