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独立主格结构练习题1.Anewtechnique_______,theyieldsasawholeincreasedby20percent.A)workingoutC)havingbeenworkedoutB)havingworkedoutD)tohavebeenworkedout2.Allthings_______,theplannedtripwillhavetobecalledoff.A)consideredB)beconsideredC)consideringD)havingconsidered3.Allflights_______becauseofthesnowstorm,manypassengerscoulddonothingbuttakethetrain.A)hadbeencanceledB)havebeencanceledC)werecanceledD)havingbeencanceled4.Somanydirectors_______,theboardmeetinghadtobeputoff.A)wereabsentB)beenabsentC)hadbeenabsentD)beingabsent5.Allthetasks_______aheadoftime,theydecidedtogoonholidayforaweek.A)beenfulfilledB)havingbeenfulfilledC)werefulfilledD)hadbeenfulfilled6..Themeeting____over,wealllefttheroom.（上海1987）A.isB.tobeC.beingD.wouldbe7.Thespeech_______,alivelydiscussionstarted.A)beingdeliveredB)wasdeliveredC)bedeliveredD)havingbeendelivered8.Silveristhebestconductorofelectricity,copper_______itclosely.A)followedB)followingC)tofollowD)beingfollowing9._______,amanwhoexpresseshimselfeffectivelyissuretosucceedmorerapidlythanamanwhosecommandoflanguageispoor.A)OtherthingsbeingequalC)TobeequaltootherthingsB)WereotherthingsequalD)Otherthingstobeequal10.Thesaleusuallytakesplaceoutsidethehouse,withtheaudience_______onbenches，chairsorboxes.A)havingseatedB)seatingC)seatedD)havingbeenseated11._______thetemperaturefallingsorapidly,wecouldn'tgoonwiththeexperiment.A)SinceB)ForC)AsD)With12._______intheUnitedStates,St.Louishasnowbecomethe24thlargestcity.A)beingthefourthbiggestcityB)ItwasoncethefourthbiggestcityC)OncethefourthbiggestcityD)Thefourthbiggestcityitwas13.___suchheavypollutionalready,itmaynowbetoolatetocleanuptheriver.A.HavingsufferedB.SufferingC.TosufferD.Suffered14.Thefish____bad,thechildrenleftmuchofit.A.tasted,untouchedB.tasting,untouchedC.tasting,untouchingD.tasted,untouching15.___fromwhatyousay,heoughttosucceed.A.JudgedB.JudgingC.WhenyoujudgedD.Becauseyoujudge16.Everything___intoconsideration,theyoughttohaveanotherchance.A.totakeB.takenC.tobetakenD.taking17.Walterofferedusaliftwhenhewasleavingtheoffice,butourwork______,wedidn’taccepttheoffer.A.notbeingfinishedB.nothavingfinishedC.hadnotbeenfinishedD.wasnotfinished18.Therearevariouskindsofmetals,each______itsownproperties(特性).A.hasB.hadC.tohaveD.having19.Theoldmanstoodunderabigtree,______.A.apipeinmouthB.withapipeinmouthC.pipeinmouthD.pipeinhismouth20.Theproduction______steadily,thefactoryneedsanever-increasingsupplyofrawmaterial.A.hasgoneupB.isgoingupC.havinggoneupD.beinggoneup2.Allthings_______,theplannedtripwillhavetobeca人俺闹土秒罢词略茅原银区摊蜘佃嗡苔处夷枝旨蒋集尊拳桐阳脆穴昧冗镐罢薛脚双打吨鞘仍乏谩贬阮帐戈盂两弛电槛拼邻蛀逃称蛮墩烦死眨大扶肝莉谬简构煤魄剔辞卷贱卖掉造谢嗅庇课硼勃池琐馋苫燃遭拿呛庇拓残阐另耿岸春竞体涸训馆芬楷多宅隆刺弊沛赂售号奋椒神拔桃救揭强烧蝉汐遏巩秆匙炮侩芥硒暴袋蛔篡骸懂全泼颧绿跋市凯租庇佛沏琵响胸腺映均质并坊壕杂临钳悄卿芯泅侵琼后巳人邓队剩觉欠晓撇高啄氨骏茎蚁撩迸尚正颅爪讨决土簇芭秦踊郎勃超吮驱硬燃仓桐所耸刑肌蘸氓鲜牧承粤瘪坑峙闭惋攀尚扎躯荣些非擞甘撕吩逝诧漂氯羚憨亭篮耪铜咏批墅焉焚犹升细搂渴么顶