Which we will give priority to this task because some friends had to be moved to another school, so we see each other less and less, so we keep the memory of the day the most.
Which we are going to focus on this task. Because some people will just move to another school. Thus, we see less and less. We keep the memory of that day as much as possible.
We will focus on this job. Because some friends will be transferred to another school. Therefore, we see less. We keep the memories within days as much as possible.