汉语翻译成英语，不要直译【中国式】的那种。谢谢！

1自从有了移动电话后，他再也没有给朋友写信了[no longer]
Since he got a mobile phone,he no longer wrote to his friends.
2 尽管很忙，他每天至少花二小时上网，了解这个领域的最新动态。[even though]
Even though busy, he spent at least two hours on the Internet in order to learn news in this area.
3李教授在毕业典礼上做了一个简短的讲话，他的话深深的铭刻在我的记忆中。[impress upon]
Professor Li made a short speech in the graduation ceremony,and his words deep impressed upon me.
4讲到期末考试，学生们一点儿都不紧张，他们满脸都是自信。[coufidence]
Speaking of the final examination, the students didn't feel nervous at all.Their faces were full of confidence.
5在30分钟内写出一篇约100个词的短文，对于他们班大多数学生来说不过是小菜一碟。[snap]
Writing a 100-word essay within thirty minutes is just a snap of cake for most of students in their class.

1 Since the mobile phone, he no longer wrote letters to friends
2 Even though he is very busy, he spent at least two hours every day on the Internet to know the latest trends of this field .
3 Professor Li made a short speech at the graduation ceremony , his words deep impressed upon my memory.
4 When talking about the final exam, students were not nervous at all,and their faces were full of coufidence.
5 To write a short passage about 100 words in 30 minutes , for the majority of the students in their class , is just a piece of cakeit's a snap.
O(∩_∩)O~我自己翻译的 ，希望对您有帮助，祝您学习进步，天天向上！