Yes, I agree with the opinion. i think sports and social activities are just as important aas class and libraries, Firstly, i think doing sports are also important to people, because if you only focus on study, you won't have a healthy body, if you don't have a healthy body, it can also impact your grade in the bad way. secondly, when you doing sports with other students, you can improve your teamwork skills, it's very important to your whole life, because when you doing anything with people in future, you will need to use teamwork skill, and if you are really good at this, it will be much easier for you to do things, and to get trust from people. thirdly, When you have some bad attitude during life or study and you want to give vent to it, the sport is a great way to use, when you doing sports, your brain will not be focus on what makes you sad, you can get pleasure through the sport, so it's will kind of reset your mind and make you more concentrate on your work after playing sports. forth