请大家帮我看看英语作文的错误并指出改正，谢谢

1. write a letter to sb. for要改成to

2. who is addicted to the internet. 或者who has internet addiction.(who引导的是一个句子，要有动词)，还是说其实画面应该是e-mail啊，信和邮件还是有点不一样的。e-mail更加明确。如果是邮件的话。

3. unreasonable，不合理的，代替unthinkable，会好点吧。

4. upstairs已经是副词了，不需要再加in这个介词了。

5. But as chatting online becomes more and more popular, it is becoming a normal thing.

6. Why do....，疑问句，在疑问词后面放动词

7. instead of contacting to each other face to face

8. I think 开头的句子没有必要。其实英语里面比较少用设问的形式的。可以说There are reasons why people...

9. any time any where/whenever wherever possible。不限时间和地点主要是指网络使得空间距离感减小吧。With the help of internet we can chat with people who are maybe far away or even strangers, that means we can get to know people from different cultures through internet. 

10. People could feel and know better when people contact each other face to face, so communication would be more efficient. Besides peole can touch each other, which is very important in communication. 

1)你的题目想说互联网改变人与人交流方式，但你文章的结尾似乎在说明互联网无力改变的。你不应该在文章的最后结论部分突然想起来你的题目其实不合适。要么修改题目要么修改结论。
2）文章的开头换成：imagine that: ....这样比“picture is ”要有力