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. 小题1: A．asleep B．sleep C．rest D．play 小题2: A．to work and play B．working and to play C．to work and playing D．working and playing 小题3: A．much B．more C．most D．slow 小题4: A．can B．may C．need D．must 小题5: A．while B．before C．as D．after 小题6: A．hour B．hours C．hour’s D．hours’ 小题7: A．air B．sun C．water D．food 小题8: A．felt B．will feel C．are feeling D．has felt 小题9: A．foot B．arm C．head D．body 小题10: A．many B．much C．lots of D．enough 小题11: A．open B．close C．draw D．use 小题12: A．happy B．interested C．helpful D．healthy 小题13: A．much B．more C．many D．a lot 小题14: A．one or two times B．one and two times C．once or twice D．once and twice 小题15: A．So B．But C．And D．As for