My high school life has made me learn many things. Between them teamwork is the most significantly for me. In fact, I didn’t realize its importance after I was elected monitor. In the begin, I did almost all the duties myself, however, others students cared little about class activities. Therefore, I worn out and depressed. Then I turned to my head teacher but he advised me to cooperate with others. Gradually, I realized the strengths of my classmates and managed to have everyone to play a part in class. It is working in teams instead of on my own which has freed me of trouble and make my work more efficient.