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Enough sleep is important to health. The amount of sleep __1________(need) depends on the age of the person and the conditions in _2.________ sleep takes place. The young may need more sleep than __3.________ old, but usually eight hours are enough for the health of grown-ups. Some can do with ___4_______ than this amount, but others may need more. Every person knows his own need. ___5_______ is then a matter of good judgment to satisfy his need. Sleep should always be enough to make one bring back his __6.__________ (strong) and get ready for a day’s work.
Fresh air is necessary to sound sleep. So it is not __7.___________ reason for some people to think that it is practicable to sleep in the open air. A bath at bedtime, __8._________ hot nor cool but of body temperature, may be helpful_9._________ sleep. Sleep-producing drug should never be taken except when _10.________ (suggest) by a doctor.
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_____ to go abroad, his spare time is totally spent in learning English.
A. Having intended B. Intending C. To intend D. Because he intends
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A notice was placed by the river bank warning people to ___________ the thin ice.
A. keep off B. keep out C. keep away D. keep on
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The government has taken some measures to solve the shortage of electricity, but it may be some time _________ the situation improves.
A. since B. when C. unless D. before
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Some pre-school children go to a day care center, __________ they learn simple games and songs.
A. then B. there C. while D. where
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With online course Crazy English has over 20 million students all over China ____ the class through Internet.
A.a(chǎn)ttend B.a(chǎn)ttended C.a(chǎn)ttending D.to be attending
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He is only too ready to help others, seldom, _________, refusing them when they turn to him.
A. if never B. if ever C. if not D. if any
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——The police have caught the murderer.
——Yes, and he admitted ___________his boss on a rainy night seven years ago.
A. to kill B to have killed C having killing D have been killed
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The practice of hanging clothes across the street is a common _________ in many parts of the city.
A. look B. sign C. sight D. appearance
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He expected there ____________ more room for him to put in a desk.
A. will be B. is C. to be D. being
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