题目内容：

请先阅读下面短文，掌握其大意，然后用方框中所给的词的适当形式填空，每个词限用一次。

When do you sleep every night ? Many students don’t want1.（go）to bed early. They like2.（watch）TV and playing computer games at night. A survey3.（show）that 1/4 students can’t get nine4.（hour）of sleep a night. They often feel tired at school，5. they don’t have enough（充足的）sleep. In Scotland, some schools start a new subject—Sleep Lesson.6.（they）teachers tell the students how to sleep7.（good）. Many students like the subject. They think it’s good8. their health and study. A 15-year-old boy says,“Now I go to bed9. 10：00 every night. The next day, I usually get up early and then play sports10. an hour. I feel very great.”