Unit1 A
1.  Since he had got a mobile telephone, he has no longer been writing to his friends.
2.  Even though he is very busy, he spends at least two hours every day in surfing the Internet to learn about the newest in this area.
3.  Professor Li made a short speech at the commencement. His words were deeply impressed upon my memory.
4.  When talking about the final examination, the students were not nervous at all. On there faces was confidence.
5.  To write an essay of 100 words or so in half an hour would be just a snap to most students in their class.

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1.  Since he had got a mobile telephone, he has no longer been writing to his friends.
    a mobile telephone移动电话
    no longer