. how all information in an office systematically kept
_____ 2. contain all kinds of letters
_____ 3. documents needed more information are placed in
______ 4. placed at the beginning of each file
______ 5. correspondence of a new customer is placed in
______ 6. arranging according to dates
_____ 7. is arranged alphabetically
__ 8. contain some inactive documents
__ 9. documents to be reminded are placed in
10. can read confidential letters