小学一年级英语作文:Good friend

丰富从句的使用，文章会更出色；请作者增加词汇表达的丰富度；行文流畅，但衔接词比较少；连词使用偏少；请提高文章内敛性，段落和句子要围绕主题展开；可以适当增加副词的使用。

Dear Amy Wish you have a nice day! This is to certify that all the prices we quoted in SIA project,the exchange rate as USD 1= RMB 6.17 USD Price Validity Contract length for 1 year (from 1Jan,2014 to 31Dec,2014) and RMB Price Validity Contract length for 3 years ( from 1Jan,2014 to 31Dec,2016). We are very grateful to you for your long time support and look forward to the sucessful launch of the project.