1ex. ответьте развернуто, which benefits of a summer activity course are most important? put the ideals below in order from 1 (most important) to 4 (least important) - having the change to mix and make new friends; - improving fitness and/or strength; - learning a new skill or improving an existing one; - havind fun and avoiding boredom;
Number 2, in my opinion, is - having the change to mix and make new friends, as it helps to improve the person's communication skills (which might be useful in the future).
Then, as number 3, comes having fun and avoiding boredom, since it's a summer activity course.
And the last but not the least - improving fitness and/or strength. I put it on the 4th place, as it's not the key point of spending your time efficiently in summer.