请哪位好心人帮我看一下这5句句子的语法对吗？谢谢！

Question

My brother who took too much time packing missed the bus.
Hockey which often becomes violent is a fast-moving game.
Down coats that is also very expensive are very warm.
Henry who was the largest fish ever recorded in Idaho caught a trout.
We laughed and looked through the yearbook which contained pictures of our school days together.

Answer 1

1 packing up。语法没错，但是没有用从句的必要，因为这句是强调因果关系，而不是强调谁，所以其实用and连接就好: My brother had taken too much time packing up and missed the bus.
2 建议把which从句放句末: Hockey is a fast-moving game, which often becomes violent.
3 不懂down coats什么意思，但是你的also放的位置不对，读起来很怪，also应该放在后一个be 动词后面。ig, The coats that are very warm are also very expensive.
4 你的从句修饰错词了，按你这句的理解，Henry就是一条鱼的名字了=。=
这句应该是：Henry caught a trout, which was the largest fish ever recorded in Idaho
5 没错