1.Itwasquiet________thosebigtrucksstartedcomingthroughthetown.A.beforeB.afterC.untilD.unless

2.Itseemedonlyseconds________theboyfinishedwashinghisface.A.whenB.beforeC.afterD.evenif

3.Hardlyhadhereachedtheschoolgate________thebellrang.A.whileB.whenC.asD.assoonas

4.Weweretoldthatweshouldfollowthemainroad_____wereachedthecentralrailwaystation.A.wheneverB.untilC.whileD.wherever

5.Irecognizedyou________Isawyouattheairport.A.themomentB.whileC.afterD.once

6.Hewasabouttogotobed________thedoorbellrang.A.whileB.asC.beforeD.when

7.________Ilistentoyouradvice,Igetintotrouble.A.EverytimeB.WhenC.WhileD.Until

8._____JohnwaswatchingTV,hiswifewascooking.A.AsB.AssoonasC.WhileD.Till

9.Thechildrenranawayfromtheorchard(果园)______theysawtheguard.A.themomentB.afterC.beforeD.as

10.NosoonerhadIarrivedhome_____itbegantorain.A.whenB.whileC.asD.than

11.Severalweekshadgoneby_____Irealizedthepaintingwasmissing.A.asB.beforeC.sinceD.when

It__longbeforewe___theresultoftheexperiment.A.willnotbe;willknowB.is;willknowC.willnotbe;knowD.is;know

–Whatwasthepartylike?--Wonderful.It’syears__Ienjoyedmyselfsomuch.A.afterB.beforeC.whenD.since

14.Thenewsecretaryissupposedtoreporttothemanagerassoonasshe___A.willarriveB.arrivesC.isgoingtoarriveD.isarriving

15._____gotintotheroom_____thetelephonerang.A.Hehardlyhad;thenB.Hardlyhadhe;whenC.Hehadnot;thenD.Nothadhe;when

16.Nosoonerhadhefinishedhistalk_____hewassurroundedbytheworkers.A.asB.thenC.thanD.when

17.–DidyouremembertogiveMarythemoneyyouowedher?--Yes,Igaveittoher_____Isawher.A.whileB.themomentC.suddenlyD.once

18.Ithoughtherniceandhonest___Imether.A.firsttimeB.forthefirsttimeC.thefirsttimeD.bythefirsttime

19.HewillhavelearnedEnglishforeightyearsbythetimehe_____fromtheuniversitynextyear.A.willgraduateB.willhavegraduatedC.graduatesD.istograduate

20.Themomentthe28thOlympicGames_____open,thewh