In China, more and more middle school students are getting shorter sleeping time than before.

1. , because they have much homework to do. Some homework is given by their teachers, and some by their parents. Also,2. . They are not careful enough while they do their homework,3. . some students spend too much time watching TV or playing computer games. They stay up very late. Some students have to get up early every morning on weekdays to get to school on time by bus or by bike.4. . It will probably make them sleepy during school hours. Schools and parents should cut down some of the homework so that our children can enjoy more than nine hours of sleep every night for their health. For children, they should make the best use of their time.5. , they will find it much better for both their study and health.

A.Some homework is too difficult.

B.Most students sleep less than nine hours every night.

C.When they have enough time for sleeping.

D.It can be a long way home to school.

E.so it takes them a lot of time

F.some students don’t know how to save time

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