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Life is full of chances and challenges. For students, if we don't study hard, 1, we will fall 2 other students. At first, I didn't know 3 the word " exam" meant. Later, I knew an exam was a 4 of competition. In competitions, there were always 5 and losers. As I grew up, I got to know competitions well. In one's life, there must be competitions, so people could 6.
Each time I saw children 7 games, and heard their laughter, I 8 I were that age again. However, I remembered my parents' words—You must work very hard 9 have a good future. So I 10 up my pen and began to study hard again.
I was still not 11 what competitions really meant. One day, I was 12 an English-speaking competition. When I went to the stage, I saw other students looking at me kindly. I suddenly knew what the competition was. It was not as cruel 13 my teacher and parents told me. In fact, competitions were important and necessary.
I learned a lot 14 what I experienced. Now I understand 15 about the world. Competitions are important for us all.
，则（ ）