✔ 最佳答案
Please be advised that the school will proceed some maintenance works (including pest control, tree planting and others) on 25 Jan. The manpower arranged on that day is obviously insufficient. In this regard, would you please inform the Security Department to arrange a security guard to the school for assistance on the said date from 08:00 to 16:00.
2012-01-12 12:55:13 補充:
The manpower arranged on that day is obviously insufficient.
amended as:
It is obvious that the manpower arranged on that day is insufficient.