题目内容：
Filing means keeping documents in a 回答place and being able to find them easily and quickly. Documents that are 回答
will not easily tear, get lost or dirty.
A filing system is the central record-keeping system for an organization. It helps all people who should be able to access information to do so easily. It is always 回答
when someone looks for something and is able to find it without difficulties. In our organizations we work in groups. We receive and send out documents on different subjects. We need to keep these documents for 回答
reference. If these documents are not cared for, we cannot account for all our organizational activities. Everyone who needs to use documents should know 回答
to get them.
1. A. clean B. secret C. safe
2. A. cared for B. caring for C. care for
3. A. a luck B. a pleasure C. a fun
4. A. future B. past C. historic
5. A. when B. why C. where
参考答案：