The time of middle school is short and precious, but for some students, they sit in the class and don't show any passion to learn knowledge. They like to do something that is against what teachers tell them to do. Such as when the teacher is presenting knowledge, they choose to read novel, or when it is the time for them to do some exercise, they sleep. They don't care about study. It is so negative for them to treat study. We are young and should be full of energy. It is the best time for us to gain knowledge. What we learn today will help us to realize our dreams, so let's fight for our goals.