1.Is brighton a famous holiday town?
Yes,it is.答案在第一局
2.Why the population of Brighton increases in the summer?
Because it gets a lot of tourists in summer.答案在第二段第一句和第二句
3.How did Brighton become a popular seaside holiday town?
It became a popular seaside holiday town when swimming in the sea became popular and a lot of famous people began to arrive.答案在第三段开头
4.Who was John Nash?
He was a very famous builder at the time.答案在倒数第二段中间部分
5.What is BRIGHTON famous for?
It's famous for Royal Pavilion and its international festival.答案在文章最后一部分