英语翻译

你好！ 翻译如下：
1 There is no doubt that the environment affects a child a lot.
2 You should dress decently in such a splendid occasion.
3 Seize every chance to commuciate in English if you want to improve your oral English.
4 Not until was he told the news he believed what we said.
5 It is known that success is comprosed of deligence without which you can not make it.
6 It seems that the minister can not avoid the questions from the journalists.
7 I assure you that things like yesterday won't happen again.
8 It happened to me that I met the fammous scientist you reffered to before.
谢谢