根据短文内容，完成下列各题。

Sports can help us a lot. Taking exercise can make us strong. In collective(集体的) sports like basketball, volleyball, or football, we will learn the importance of cooperation. And sports can also help us relax after work or study.

However, as the saying goes, "There are two sides of everything." Sometimes we may hurt other players or ourselves if we are not careful enough when participating(参加) in sports activities. What's more, too much or hard practice can be bad for our health.

    Sports can make us healthy both physically and psychologically(心理地). It is also a good way for people to know each other and can improve friendship between people. So long as we are careful enough, sports can do us nothing but good.