英语翻译

英语翻译
There are several differences between high school in the USA and high schools in Chian.For one thing,students 1___study in the USA are in class only about twenty hours per week.The rest of the time 2___they spend at school is used for independent study.With so much free time,student 3___do not make good use of their time may not pass their exams.Student 4___the teacher fail may have to take the classes again.For another thing,many courses are classes 5___the student can study just for fun,but 6___they do not have to take.Finally,students can often choose their classes and class tines.Some courses are required,but the students can still decide the teacher 7___class they wish to take.They can choose to take the class of a teacher 8___they like or respect.