下列句子均有一处错误,请指出并改正（最好说明原因）

下列句子均有一处错误,请指出并改正（最好说明原因）
1.No news are good news.
2.A pair of shoes are under the bed.
3.There are an old man and some children over there.
4.There is many fresh water here.
5.They have little CDs here.

1 No news is good news.
2 A pair of shoes is under the bed.
3 There is an old man and some chidren over there.
4 There is much fresh water here.
5 They have some CDs here.