英语语法填空Enoughsleepisimportanttohealth.Theamountofsleepneeded(1)____ontheageofpersonandtheconditionsin(2)____sleeptakesplaces.Theyoungmayneedmoresleepthan(3)____old,butusuallyeighthoursareenoughforthehealth

　　英语语法填空

　　Enoughsleepisimportanttohealth.Theamountofsleepneeded(1)____ontheageofpersonandtheconditionsin(2)____sleeptakesplaces.Theyoungmayneedmoresleepthan(3)____old,butusuallyeighthoursareenoughforthehealthofgrown-ups.Somecandowith(4)____thanthisamount,butothersmayceedmore.Everypersonknowshisownneed.(5)____isthenamatterofgoodjudgmenttosatisfyhisneed.Sleep(6)____alwaysbeenoughtomakeonebringbackhis(7)____(strong)andgetreadyforaday'swork.

　　Freshairisnecessarytosoundsleep.Soitisnot(8)____reasonforsomepeopletothinkthatitispracticabletosleepintheopenair.Abathatbedtime,(9)____hotnorcoolbutofbodytemperature,maybehelpfultosleep.Sleepprouducingdrug(帮助睡眠的药物)shouldneverbetakenexceptwhen(10)____(suggest)byadoctor.