选词填空。（每个空格1分，共10分）kind, many, for, have, until, expensive, they, student ,leave ,go In t

选词填空。（每个空格1分，共10分）
kind, many, for, have, until, expensive, they, student ,leave ,go
In the United States, children start school when they are five years old. In some states they must stay in school 61 they are sixteen. Most students are seventeen or eighteen years old when they 62 high school. There are two 63 of school in the United States: public school and private school. Most children go to public schools. Their parents do not have to pay 64 their education because the schools receive money from the government. If a child 65 to a private（私立的） school, his parents 66 to pay enough money for his schooling. Some parents still choose private schools, though they are much more 67 .
Today about half of the high school 68 go to universities after they finish the high school. A student at a state university does not have to pay too m 69 if his parents live in this state.
But many students work while they are studying at universities. In this way they can have good working habits and live by 70 own habits .until

(答案→)until 解析：根据上下文的内容来选择适当的单词，注意时态，人称和固定词组搭配。

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