why are we always tired,do you know?firstly if we can not sl

why are we always tired,do you know?firstly if we can not sleep

Why are we always tired, do you know? Firstly if we can’t sleep 1 , we will be tired. But we are often too 2 . We can’t finish our work in the day and we must do it 3 night. We go to bed 4 and get up early. So we can’t sleep well. Most people need at least eight 5 and some more. If we sleep for only five or six hours a night , we will be tired. Seconly when we are ill we will be tired. But we don’t know we are ill. So if you are always tired, perhaps (也许) you are not so 6 . You’d better go to see a 7 . Thirdly, perhaps you 8 eat some kinds of food like eggs, nuts, meat, chocolates or coffee. If you are ill and tired after eating some food, please don’t ear it 9 to see if (是否) you are well. At last, if the air around you isn’t nice and clean, you will feel tired. So please open your windows often or go out for a walk and you will feel 10 . ( C ) 1.A. good B. nice C. well D. fine ( A ) 2.A. busy B. free C. laze D. angry ( D ) 3.A. in B. on C. at the D. at ( B ) 4.A. early B. late C. quick D. quiet ( C ) 5.A. days B. months C. hours D. minutes ( D ) 6.A. ill B. nice C. good D. healthy ( D ) 7.A. movie B. friend C. teacher D. doctor ( D ) 8.A. can’t B. can C. don’t D. do ( D ) 9.A. too B. again C. also D. more
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