In one year she turned from a problem child into a model student.

一年内，她从问题儿童变成了模范学生。

《牛津词典》

Thanks to my English teacher, I turned from a problem child into a model student in just one year.

多亏了我的英语老师，我在一年内从问题儿童变成了模范学生。

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They say that some states have lowered their standards in order to increase student scores on tests required by the No Child Left Behind Act.

VOA: special.2010.03.25

Adult Ridacard fares will also go up, but all child and student fares will stay the same.

BBC: Lothian Buses increase fare prices

Do they want their child or student to engage with the questions around the N-word (or any other word for that matter) now or later?

FORBES: Huckleberry Finn, Censorship and e-Book V-Chips

Because child care, student loan relief, it could be helpful to people, but how does that lead a small business to hire somebody?

WHITEHOUSE: Press Briefing