摘 要: | In the United States, children start school when they are five years old. In some states they must stay in school 1 they are sixteen. Most students are seventeen or eighteen years old when they 2 middle school. There are two kinds of schools in the US: public schools and private schools. 3 children go to public schools. Their parents do not have 4 their education because the schools 5 money from the government.
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