填空题

Trip Reports
Many companies require their employees to hand in reports of their business trips．A trip report not only provides a written record of a business trip and its activities, but also enables many employees to benefit from the information one employee has gained．
Generally, a trip report should be in the form of a memorandum(内部通知), addressed to your immediate boss. The places and dates of the trip are given on the subject line. The body of the report will explain why you made the trip, whom you visited, and what you did. The report should give a brief account of each major event. You needn’t give equal space to each event Instead, you should focus on the more important events. Follow the body of the report with a conclusion．
A trip Report
Reported by：an employee back from a business trip
Addressed to：his or her immediate (46)
Used for：
1．serving as a written record
2．giving helpful (47) that can be shared by others
Written in the form of: a (48)
Information to be included in the report：
1．the places and dates of the trip on (49)
2．major events during the trip in the (50) of the report
3．conclusion