Что поставить: 1)father christmas brings presents to children (who или which)are good guest and helpful.2)we want to prepare a dinner (which или )i like the clock (whose или

Who - используется с людьми, а which - c предметами  1)father Christmas brings presents to children (who )are good guest and helpful.2)we want to prepare a dinner(which )?3)I like the clock ( which)?

1)father Christmas brings presents to children (who) are good guest and helpful.
2)we want to prepare a dinner (which)?
3) I like the clock (which)?

3)which