答案:Because he thought students at a private school might have money to buy a shirt with a cute Mickey Mouse.(因为他认为私立学校的学生可能有钱买一件印有可爱米老鼠的衬衫。)
题目翻译:为什么男孩选择在私立学校门口卖第二件衬衫?
根据文章第七段第2-3行:
Soon, it was sold to a little girl. She loved the design so much that she tipped him $5.
很快,它就卖给了一个小女孩。她非常喜欢这个设计,给了他5美元小费。
可推测,私立学校的学生更有钱一些。
因此答案可总结为:Because he thought students at a private school might have money to buy a shirt with a cute Mickey Mouse.