作文题目：
You are the office manager at an insurance company. You have arranged for contractors to upgrade your computer system. This means the system will be shut down for a full day.
Write a memo of 40-50 words:
informing staff of the shutdown
telling them when it will happen
asking them to prepare alternative work for the day.
老师提示：
商务写作中遵循的原则是：简洁，精确，礼貌。在考试中或者工作中，格式基本已经 给出，所以只需要我们写正文即可。正文中我们写作要做到选词精当，一针见血，语法正确，不出低级错误的句子。备忘录属于半正式的文体写作，所以在句子选择 上可以适当放宽，不必太正式。
网友作文一：
MEMORANDUM
from : Tom TO : all staff
date : 25/8
Because our computor system will be upgraded by the contractors on 28 AUGUEST, so the system will be shut down for a full day on that day[1], i ask for you prepare alternative work for the[2] day. and the work don't use computer system .
I think you can give a good performance to me to pass the accident. [3]
TOM
