帮忙翻几个句子，要用到括号里的词

1 自从有了移动电话后，他再也没有给朋友写信了（no longer）
after he got a mobile phone, he no longer wrote to his friends.

2 尽管很忙，他每天至少花两小时上网，了解这个领域的最新动态（even though)
even though he is very busy, he spends at least 2 hours studying the lastest news of the field via the internet.

3 李教授在毕业典礼上作了一个简短的讲话，他的话深深铭刻在我的记忆中(impress upon)
professor li's short speech in the graduation ceremony has greatly impressed upon my memory.

4 讲到期末考试，学生们一点都不紧张，他们满脸都是自信（confidence）
when it comes to the final exam, students are not nervous at all, since their expression is full of confidence.

5 在30分钟内写出一篇约100个词的短文，对与他们班大多数学生来说不过是小菜一碟（snap）
finishing an around-100-word article within 30 minutes is a snap for most students in their class.

1. He has no longer wrote to his friends since he has mobile.
2.Even though he is very busy,he spend at least two hours every day surfing the internet in order to find out the latest developments in this field.