When it comes to what to do together as a team. In the school at the end of the year probably becomes an activity called sports, which in one year there will be just one time.
When it comes to what to do together as a team. In the school at the end of the year Inevitable event called sport in which the first year, there is only one.
When referring to things to do together as a team in the school at the end of the year, it is ที่ชื activity to that sport. In which 1 years have only once.