专题限时训练(八)[状语从句](限时:10分钟)1.InBostononApril15,2013,amarathonracewasgoingon________anexplosionhappened,claimingalotoflives
A.whileB.whenC.afterD.before2.Thenewsystemneedstobeinoperationforfivemonths________itcanbeupdated
A.asB.whileC.beforeD.once3.________,aslongasI'mwithnature,Idon'tcare
A.HowevertoughthejourneyisB.WhatevertoughthejourneyisC.HoweverthejourneyistoughD.Whateverthejourneyistough4.Jerryhaspromisedtokeepthesecret,sohewon'ttellanyone________askedto
A.untilB.nowthatC.unlessD.eventhough5.Bicyclingisgoodexercise;________,itdoesnotpollutetheair
A.neverthelessB.thereforeC.otherwiseD.besides6.—Didyoureceivetheletterthenextday
Somehow,itwasthreeweeks________Ireceivedit
sinceB
before7.________IalwaysfeltIwouldpasstheexam,IneverthoughtIwouldgetanA
A.UntilB.