Потому что whom и which ставят ограничение если есть выбор
У меня 12 машинок. Мне 12 лет.
*1)Jill hasn`t been there for three years?
2)Is it snowing?-Yes,it started two hours ago
3)They got that flat twelve years ago
4)We haven`t seen each other since that evening at Mr.Grey
5)Our family haven`t heard from him for five months
1. Adam said that he has an old rocking chair in his bedroom
2. She told Petra that she wouldn't tell her what has happened until the next day
3. Lola told the guide that they want to see the Eiffel Tower that day
4. The reporter said that the police were questioning the suspect that morning
5. The teacher told that it had rained a lot that day, so the children couldn't go out