根据上下文和所给的首字母，补全空格内的词，使短文通顺。
More and more middle school students in Beijing are getting shorter sleeping time.
Most students sleep f________ (1) than nine hours every night, because they have m________ (2)
homework to do. Some homework is g________ (3) by school teachers, and some by p________ (4).
Also some students don't know how to s_________ (5) the time. They are not careful enough while
d________ (6) their homework, so it takes them a lot of time. Some students have to get up early every
morning on w________ (7) to get to school on time by bus or bike. It can be a long way from home to
school.
Schools and parents should c_________ (8) down some of the homework so that the children can
e________ (9) not less than nine hours of sleep every night for their h__________ (10).
1._____ 2._____3._____ 4._____ 5._____ 6._____ 7._____ 8._____ 9._____ 10._____
