英语词性转换的题目求助Let's finish the job in the__________time(short)W

Let's finish the job in the____shortest______time(short)
We must e careful when we cross the road because___safety_______comes first(safe)
Books can bring us___happiness______(happy)
We bought some__decoration_____to make our rooms more beautiful(decorate)
In this Thai restaurant,you can eat a lot of____tasty______food(taste)
We need some pieces of____coloured______paper to make kites(colour)

1:shortest 在最短的时间内完成。所以用最高级
2：safty 安全第一，这里应该用名词
3：happiness 书本可以带给我们快乐，用名词
4：decorations 买了些装饰品， 应该用名词，decoration为可数名词，所以要用复数
5：tasty 美味的，可口的 形容词
6：coloured 着色的，有颜色的 需要一...