短文填空Whyarewealwaystired,doyouknow?First,ifwedon’t

問題詳情：

短文填空

Why are we always tired, do you know?

First, if we don’t _1_well, we may feel tired. But we are often too busy. We can’t do our work in the day and we have to finish it at night. We go to bed _2 and get up early, so we can’t sleep well. If we sleep for only five or six 3_ at night, we must be tired.

Second, when we are ill, we may also feel tired. But we don’t know we are ill. So if you are always tired, maybe you are not so well. You’d better go to see a _4.

Third, maybe you can’t eat some kind of food , _5 as eggs, nuts or coffee. If you are ill and tired after _6_ some food, please don’t eat it again.

At last, if the air around you isn’t nice and clean, you will feel tired, __7__. So you can ___8_ your window often or go__9_ a walk .

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