Помогите прошу!!!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 whose).........?3)I like the clock (whose или which).........?

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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