求翻译，谢谢。（满意答案追加50点）

1.He seems to be unwilling to make further comment.
2.You have drank too much coffee,no wonder you can't fall into sleep.
3.It is estimated that it takes more than a year and a half to go to the Mars and back.
4.He happened to make the similar exerxise before.
5.It is ture that he plan to go to Moscow by train.
6.The fact is generally known that all substances in the world consist of atoms.
=================================
剩下的我5点左右再给你翻译哦~我一会有节课，先给你翻译一半。。。~
（回来了，接着说下面的）
7.Whether this kind of stuff can be used in our factory is still a question.
8.It is proved that their proposal is reasonable in some extent.
9.It turned out that he hadn't go abroad and he is not an overseas chinese.
10.is the time of the next train to Tibet announced?
11.Whether the new product can sell well depend on its quality.
12.It is reported that this wild plant is rich in vitamin.
---------------------------------------------------------
1.Whether this kind if teaching material is fit to our school has never been discussed.
2.What surprised me most is the sudden change of his attitude.
3.That the Expo 2010 is to be hold in Shanghai is an established fact.
4.All the countries agree that they will never attack against whatever object with the symbol of Red Cross.
5.How should this plan be carried out remains to be discussed.
6.Whether a book sells well depends on a number of factors.
===========================================
终于完了。。。全人工翻译能力有限见谅哈~

=============
刚发现要求是全IT主从啊~那就不符合要求了~请LZ直接忽略以上翻译吧...汗
别管我这个回答了就

1.It seems that he is unwilling to make more comments.
2.It is no wonder why you are sleepless due to that much coffee you had.
3.It is estimated that a round trip to the Mars would take a year and a half.
4.It happend to be the exercise he had before by chance.
5.It is true indeed that he planed to taking a train to Moscow.
6.It is a reality that all the materials and consisted of atoms.
7.It is still a question whether this material can still be used in our factory.
8. It has been proved that their advices are reasonable from a certain perspective.
9.It turned out that he has never been abroad,not to mention being a oversea Chinese.
10.Has it been annouced the time of next train to Tibet?
11.It depends on the quality whether the new products will be a best-seller.
12.It is reported that this wild vegetable is rich in vatamins.
1.It has not been debated whether this textbook is suitable to our school.
2.What is unexpected to me was that his attitude was sudden changed.
3.It is a certain thing that 2010 World Exposition will be held in ShangHai.
4.It is all agreed that anything with a RedCross is protected from harm.
5.It takes more discussions about how this plan will be carried out.
6.It takes many factors whether a book will be a best-seller.