I have a good news to tell you that I （will leave for Beijing ）July to join an English speech contest,such a good chance that we can meet together
（）里面,leave是瞬间动词,用进行时态表示将来,后面的July前加in,后面的such前面加which is,构成从句,否则这就是个病句了.
第二段,busy 后面的in删去,第二行最后一个单词,应该是article吧.
there is a few news about it online and the number of them is out of style
news不可数,a few改成a little ,强调很少前面加only;number-content,内容
第一句话也把a news改成a piece of news,
Do you have some suggestions ,some改any
that how to build a low carbon city,that———about,别总用that,句子显得太拖拉.
I will appreciate（） if you can help me.（）中加个it
Dear Tom:
I am happy to write to you ,How about your life in china during this month?I have a piece of good news to tell you that I am leaving for Beijing in July to join an English speech contest,which is such a good chance that we can meet together .you know,I miss you very much!
Recently,I am busy preparing my contest,but there is a trouble that confused me,my speech topic is how to protect our environment and I want to make some differences in my artticle.Neverless,there is only a little news about it online and the content of them is out of style.Do you have any suggestions about how to build a low carbon city?I will appreciate it if you can help me.
At the end of the letter,I hope I can pay a visit to you after the contest and I am looking for ward to you reply!
Yours
Li Hua