Complete each blank with one given word.There are more words than needed

Complete each blank with one given word.There are more words than needed
Volcano-who-whose-So - because - where-funnel-shaped-which-however
1.People can usually predict when a...will erupt
2.She is the girl....sits next to me in class
3.He is a person...friends trust him
4.That is the place...the accident occurred/happened/took place