1.This is boy_____father died from the accident yesterday
a.what b.whose c.whom d.who

2.This is the man_____I saw yesterday.
a.whom b.when c.whose d.who

3.Jimmy went to the park____he met Jenet there.
a.what b.when c.where d.who

4. I don't believe in___he said.
a.what b.when c.whom d.who

5.A teacher will explain us___to do the exercise.
a.how b.when c.whom d.who

help me~~​