2020年公共英语一级单项选择练习试题2

D.notallow2020年公共英语一级单项选择练习试题21.Idon'tthinksixteen-year-oldsshould_____togotobars(酒吧).A.allowB.beallowingC.beallowedA.isregarded2.Attention,please!Allthemobilephones_____duringthemeeting.A.mustkeepoffB.havekeptoffC.arekeepingoffD.mustbekeptoff3.—IfeelveryhappythatI_____tobethehost.—Congratulations!A.chooseB.amchosenC.chosenD.havechosen4.BaJin,oneofthegreatestwritersinChina,_____as“People'sWriter”.B.builtB.hasregardedC.isregardingD.regards5.—Makesureallthelights_____whenyouleavetheroom.—OK,Iwill.A.turnoffB.areturnedoffC.turnonD.areturnedon6.Abigmarket_____inourcitylastyear.A.isbuiltC.werebuiltD.wasbuilt7.We_____togointotheschoolunlessweareinschooluniforms.A.allowB.areallowedC.arenotallowedD.shouldbeallowed8.—Sixteen-year-olds_____todrive.—Iagree.Theyaren'tseriousenoughatthatage.A.shouldn'tbeallowedB.shouldbeallowedD.maybethrownC.don'tallowD.areallowednot9.—Whatshouldwedofirstifwewanttodevelopourvillage?—Alotofroads_____,Ithink.A.mustbuildB.havetobuildC.mustbebuiltD.havebuilt10.Tomakeourcitymorebeautiful,alltherubbish_____intotheriver.A.needn'tbethrownB.mustn'tbethrownC.can'tthrow【答案】1.C含有情态动词的被动语态，在情态动词的后面用“be+过去分词”。2.D含有情态动词的被动语态，在情态动词must的后面用“be+keptoff”表示3.B从句子可以判断用“be+过去分词(chosen)”表示“被选为”。4.A主语不是动作的执行者，所以用被动语态。5.B句子的主语是lights和后面的动词turnon/off是被动关系，所以用被动语态。从句意判断用turnoff(关灯)。6.D从句子的主语和谓语的关系判断是被动关系，用被动语态。从句子的时间状语看是一般过去时，所以用wasbuilt。7.Cunless“除非”，和ifnot是同义词，所以前面用被动语态的否定形式。8.A含有情态动词的被动语态，从对话后面的句子判断前面的句子是否定。9.C主语roads与后面的谓语build之间是被动关系，要用被动语态。含有情态动词的被动语态是在