During the day we work and play, and at night we sleep. Our bodies rest while we are   1 . In the morning we are ready  2  again. Our bodies grow   3  while we are asleep. Children who are tired usually   4  sleep. We can get better at our lessons  5  we have had plenty of rest. Boys and girls who are eight or nine years old need ten  6 sleep every night. Our bodies need plenty of   7  when we sleep. If we do not get enough fresh air, we      8  tired when we wake up. While in bed we must not cover our   9 . Our lungs(肺) needs to get  10 fresh air. If we   11 our windows at night, we can have plenty of fresh air. Cool air is better than warm air. Boys and girls who want to be   12  must get plenty of sleep.
Also, we need some after-school activities to keep in good health.   13 _students run every day. Some boys play basketball  14 a week.   15  girls,  some  often  play volleyball….So good sleep and exercise can help us grow better and study better.

During the day we work and play，and at night we sleep. Our body rests when we sleep. In the morning we are ready to work and play again. Our body grows most when we are asleep. Children who are tired usually need sleep. We can get better at our lessons after having plenty of rest. Boys and girls who are eight or nine years old need ten hours of sleep every night. Our body needs plenty of air when we are asleep. If we do not get enough fresh air, we will feel tired when we wake up. While in bed we must not cover(覆盖) our head，our lungs need to get enough fresh air. If we open our windows at night，we can have plenty of fresh air. Cool air is better than warm air.
【小题1】Our body grows most while we are _______.
A.eating    B.playing   C.sleeping 
【小题2】Too little sleep makes us _______.
A.tired B.hungry    C.happy
【小题3】—What may cause us to feel tired in the morning?
—_______ during the sleep.
A.Too much air      B.Not enough fresh air
C.Too much cold air    
【小题4】How many hours of sleep should 9-year-old children have every night?
A.8 hours.  B.9 hours.  C.10 hours.
【小题5】What do the lungs need most?
A.Fresh air.    B. Exercise.    C.Warm air.

During the day we work and play, and at night we sleep. Our body rests while we sleep .In the morning we are ready to work and play again. Our body grows most while we are asleep. Children who are tired usually need sleep. We can get better at our lessons after we have had plenty of rest. Boys and girls who are eight or nine years old need ten hours of sleep every night.Our body needs plenty of air when we sleep. If  we do not get enough fresh air, we will feel tired when we wake up. While in bed we must not cover our head.Our lungs need to get enough fresh air. If we open our windows at night, we can have plenty of fresh air.Cool air is better than warm air.Boys and girls who want to be strong must get enough and plenty of sleep.
【小题1】Our body grows most while we are.

During the day we work and play; at night we sleep. Our bodies rest while we sleep. In the morning we are ready to work and play again. While we are asleep our bodies grow most. Children usually need more sleep. We can get our lessons better and we feel better too, when we have plenty of rest. Boys and girls need ten hours of sleep every night when they are eight or nine years old. Our bodies need lots of air when we sleep. If we do not get enough fresh（新鲜的）air we’ll feel tired when we wake up. While in bed we must not cover our heads. If we do, our lungs（肺）will not get enough fresh air. If we open our windows at night we can have plenty of fresh air. Cool air is better then warm air. Boys and girls must get enough sleep if they want to grow and be strong.
【小题1】 Our bodies grow most while we are___________.