根据下列短文内容，在短文后的空格处填上一个恰当的词，使短文完整、通顺。During the day we work and play. At night we sleep. Our

根据下列短文内容，在短文后的空格处填上一个恰当的词，使短文完整、通顺。
During the day we work and play. At night we sleep. Our body rests and grows most while we  78 asleep.  79 the morning we are ready to work and play again. Children who are tired usually need more sleep. We can study better after we have  80  rest. Boys and girls who are eight or nine years old are 81  ten hours of sleep every night.
Our body needs fresh air when we sleep.In 82  we do not get enough fresh air, we will feel tired when we wake up. We should 83  our windows at night, and we can have a lot of fresh air. Cool air is better  84  warm air. Boys and girls who want to be enough/much 85  must get pleny of sleep.

解析：【小题1】考查be动词：主语是we 复数，用are【小题2】考查介词：In the morning在早上【小题3】考查形容词：enough/much 修饰rest【小题4】考查动词：8到9岁的孩子每晚需要10小时的睡眠：need　【小题5】考查If条件句：如我们没有足够的新鲜空气，就会觉得累。【小题6】考查动词：打开窗户，用open【小题7】比较级better和 than连用【小题8】考查形容词：想强壮/健康的孩子必须有足够的睡眠：strong/healthy

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