B1.Itwasquiet________thosebigtrucksstartedcomingthroughthetown.A.beforeB.afterC.untilD.unless2.Itseemedonlyseconds________theboyfinishedwashinghisface.A.whenB.beforeC.afterD.evenif3.Hardlyhadhereachedtheschoolgate________thebellrang.A.whileB.whenC.asD.assoonas4.Weweretoldthatweshouldfollowthemainroad_____wereachedthecentralrailwaystation.A.wheneverB.untilC.whileD.wherever5.Irecognizedyou________Isawyouattheairport.A.themomentB.whileC.afterD.once6.Hewasabouttogotobed________thedoorbellrang.A.whileB.asC.beforeD.when7.________Ilistentoyouradvice,Igetintotrouble.A.EverytimeB.WhenC.WhileD.Until8._____JohnwaswatchingTV,hiswifewascooking.A.AsB.AssoonasC.WhileD.Till9.Thechildrenranawayfromtheorchard(果园)______theysawtheguard.A.themomentB.afterC.beforeD.as10.NosoonerhadIarrivedhome_____itbegantorain.A.whenB.whileC.asD.than11.Severalweekshadgoneby_____Irealizedthepaintingwasmissing.A.asB.beforeC.sinceD.when12.It_____longbeforewe____theresultoftheexperiment.A.willnotbe;willknowB.is;willknowC.willnotbe;knowD.is;know13.–Whatwasthepartylike?--Wonderful.It’syears_____Ienjoyedmyselfsomuch.A.afterB.beforeC.whenD.since14.Thenewsecretaryissupposedtoreporttothemanagerassoonasshe_____.A.willarriveB.arrivesC.isgoingtoarriveD.isarriving15._____gotintotheroom_____thetelephonerang.A.Hehardlyhad;thenB.Hardlyhadhe;whenC.Hehadnot;thenD.Nothadhe;when16.Nosoonerhadhefinishedhistalk_____hewassurroundedbytheworkers.A.asB.thenC.thanD.when17.–DidyouremembertogiveMarythemoneyyouowedher?--Yes,Igaveittoher_____Isawher.A.whileB.themomentC.suddenlyD.once18.Ithoughtherniceandhonest_____Imether.A.firsttimeB.forthefirsttimeC.thefirsttimeD.bythefirsttime19.HewillhavelearnedEnglishforeightyearsbythetimehe_____fromtheuniversitynextyear.A.willgraduateB.willhavegraduatedC.graduatesD.istograduate20.Themomentthe28thOlympicGames_____open,thewholeworldcheered.A.declaredB.havebeendeclaredC.havedeclaredD.weredeclared