Choose the correct word.1)That039;s the boy whose/who lives next door.2)The people

Choose the correct word.
1)That's the boy whose/who lives next door.
2)The people which/whose horse won the race come from Portugal.
3)2004 was the year when/where the Olympic Games were held in Athens.
4)This is the house which/where he was born.
Помогите пожалуйста.