Going to public high school is 1. in the United States while tuition for private high school is very expensive. High school lasts for 2. years. Some high schools have admission exams (入学考试) or an application (申请) process. Students have to complete a series of core (核心的) 3. . In order to successfully complete high school, students can also choose to take an elective 4. . To graduate and earn a high school diploma (文凭), some high schools in the US have exit 5. .

1. free 2. four 3. classes 4. course 5. exams