当我还在上高一时，有一天，我看到我们班的一个孩子正步行回家。
One day, when I was a freshman in high school, I saw a kid from my class walking home from school.
有一天，当我走回家时，突然有人扔给我一个苹果，我看着它掉在我的前面。
One day, when I am walking home, suddenly someone throw an apple to me, I see it fall down in front of me.
有一天，当我放学后走路回家时，我看见这个小伙子正在帮助一个老人捡起地上的水果。
Some day, when I walk home after school, I see this guy is helping an old man pick up the fruit on the ground.
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