Riddles(I) 　　1.Whatissmallerthananinsect''smouth? 　　2.Whatseasonisthemostdangerousone? 　　3.What''stoomuchforme,justrightfortwo,butnothingatallforthree? 　　4.Onwhatdayofayeardosoldiersstartwarsinhistory? 　　5.Howmanyfeetareinayard? 　　6.Whatpersontriestomakeotherssmilemostofthetime? 　　7.Fromwhatnumbercanonetakehalfandleavenothing? 　　8.Whathashandsbutnofeet,afacebutnoeyes,tellsbutdoesnottalk? 　　9.Howmanymonthshave28days? 　　10.Whichhorseshavesixlegs? 　　Keys(I) 　　1.Anythingiteats. 　　2.Autumn.BecauseitisalsoFALL. 　　3.Asecret. 　　4.Marchfourth.Whenawarbreaksout,they''llhavetomarchforth. 　　5.Itdependsonhowmanypeoplearestandinginit. 　　6.Aphotographer. 　　7.Thenumber8. 　　8.Takeawaytheupperhalfand0isleft. 　　8.Aclock. 　　9.Allofthem.Eachmonthhasits28thday. 　　10.Allhorseshaveforelegs(fourlegs)infrontandtwoinback,sotheyallhavesixlegs. 　　Riddles(II) 　　11.Whydon''tbabiesneedglasses? 　　12.Whatdoyoudropwhenyouneeditandtakebackwhenyoudon''t? 　　13.What''sthedifferencebetweenamonkeyandaflea(跳蚤)? 　　14.Whatisblackwhenitiscleanandwhitewhenitisdirty? 　　15.What5-letterwordhassixleftwhenyoutake2lettersaway? 　　16.Whatisthecenterofgravity? 　　17.Whatneverasksquestionsbutalwaysgetsanswers? 　　18.WhenColumbusdiscoveredAmerica,wheredidhestand? 　　19.Whatis"fourfeetonfourfeetwaitingforfourfeet? 　　20.Whentheboyfellintothewater,what''sthefirstthinghedid? 　　Keys(II) 　　11.Becausetheylikebottlesbetter. 　　12.Ananchor.(锚) 　　13.Amonkeycanhavefleas,butafleacan''thavemonkeys. 　　14.Ablackboard. 　　15.Sixty. 　　16.TheletterV. 　　17.Adoorbell. 　　18.Onhisfeet. 　　19.Acatonachairwaitingforamouse. 　　20.Hegotwetfirst. 　　Riddles(III) 　　21.Whoisn''tyoursisterandisn''tyourbrother,butisstillachildofyourmotherandfather? 　　22.Whathasteethbutcan''teat? 　　23.Whatkindofmancanraisethingswithoutliftingthem? 　　24.Whichcandleburnslonger:ablackoneorawhiteone? 　　25.Whydoesacookwearahigh,whitehat? 　　26.Canyounamefivedaysoftheweekwithoutsaying:Monday,Tuesday,Wednesday,Thursday,Friday? 　　27.Whatkindofdognevercanbiteandbark? 　　28.Whathasasoftbedbutneversleeps,abigmouthbutneverspeaks? 　　29.Fourgirlshaveabasketwithfourapplesinit.Howcanyoudividetheapplessothateachgirlgetsawholeappleandonestillremainsinthebasket? 　　30.Whicheight-letterwordhasoneletterinit? 　　Keys(III) 　　21.Youyourselfare. 　　22.Acomb. 　　23.Afarmer.Hecanraisepigs,chickensandsoonwithoutliftingthem. 　　24.Neither.Becauseallcandlesburnshorter. 　　25.Tocoverhishead. 　　26.Thedaybeforeyesterday,yesterday,today,tomorrow,andthedayaftertomorrow. 　　27.Ahotdog. 　　28.Ariver. 　　29.Givethreegirlsanappleeach,andgivethefourthgirlhe