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省略练习1.Theboywantedtoridehisbikeinthestreet,buthismothertoldhim_____.A.nottoB.nottodoC.notdoitD.donotto2.Thetraditionalgoalofscienceistodiscoverhowthingsare,nothowtheyought____.A.toB.tobeC.beD.havebeen3.Tomwantedtoplayfootballwithhisfriendsinthestreet,buthisfathertoldhim_____.A．nottoB．nottodoC．notdoitD．donotto4.---Ihopethechildrenwon’ttouchthedog.----I’vewarnedthem____.A.notB.nottoC.nottouchD.notdo5.SomestudentsaregoingtoChinainsummervacation,and____.A.somearetoAmericaB.somegoingtoAmericaC.sometoAmericaD.someAmerica6.Fatheradvisedmenottosayanythinguntil_____atthemeeting.A．askingB．toaskC．askedD．ask7.—Haveyouwateredtheflowers?—No,but_____.A．IamB．I’mmgoingC．I’mjustgoingtoD．Iwillgo8.—Hehasn’tgonetotheofficeuptonow.—Well,he_____.A．shouldB．oughttoC．oughttogoD．oughttohave9._____,Iwillhelpyouwithyourwork.A．IfampossibleB．IfitpossibleC．IfpossibleD．Possible10.___theroad,don’tforgettolookbothways.A.AscrossingB.WhileyoucrossC.WhilecrossingD.Cross11.Chemistryisthescienceofsubstances___thescienceofenergy.A.andisphysicsB.orisphysicsC.andphysicsD.orphysicsis12.—Howareyougettingonwithyourwork?—Oh,I’msorry.Thingsaren’tgoingsowellas_____.A．plansB．planningC．plannedD．toplan13.---Susan,goandjoinyoursistercleaningtheyard.---Why___?Johnissittingtheredoingnothing.A.himB.heC.ID.me14.—Areyouavolunteernow?—No,butI_____.IworkedfortheCitySportsMeetinglastyear.A．usedtoB．usedtobeC．usedtodoD．wasusedto15.---Youmustobeyeverywordofmine.----____Idon’t.?A.HowifB.WhatifC.SuchasD.Onlyif16.When___,themuseumwillbeopentothepublicnextyear.A.completedB.completingC.beingcompletedD.tobecompleted17.Themanwefollowedsuddenlystoppedandlookedasif____whetherhewasgoingintherightdirection.A.seeingB.havingseenC.tohaveseenD.tosee18.—Waituntilwegetasatisfactoryone,willyou?---Icouldn’tagree___,Itsoundsgoodtome.A.muchB.worseC.moreD.atall19.——I’llbeawayonabusinesstrip.Wouldyoumindlookingaftermycat?——Notatall.______________.A.I’venotimeB.I’drathernotC.I’dlikeitD.I’dbehappyto20.——Doyoumindmytakingthisseat？——__________.A.Yes,sitdownB.No,ofcoursenotC.Yes,takeitpleaseD.No,youcan’ttakeit21.——Iusuallygotherebytrain.——Whynot_____byboatforachange?A.totrygoingB.tryingtogoC.totryandgoD.trygoing22.Unless________tospeak,youshouldremainsilentattheconference.A.invitedB.invitingC.beinginvitedD.havinginvited23.Though_______money,hisparentsmanagedtosendhimtouniversity.A.lackedB.lackingofC.lackingD.lackedin24.Theresearchissodesignedthatonce_____nothingcanbedonetochangeit.A.beginsBhavingbegunC.beginningD.begun25.______,hedoesn’twanttogotoschoolandkeepintouchwiththebadboys.A.AsheisastudentB.HeisasstudentC.StudentasheisD.Asstudentsheis26.—Howareyougettingonwithyourwork?—Oh,I’msorry.Thingsaren’tgoingsowellas_____.A.plansB.planningC.plannedD.toplan27.—Youshouldhavethankedherbeforeyouleft.—Imeant_____,butwhenIwasleavingIcouldn’tfindheranywhereA.tothankB.toC./D.thanking28.Whenfirst_____tothemarket,theseproductsenjoyedgreatsuccess.A.introducingB.introducedC.introduceD.beingintroduced29.Youmaytakethemallhome_____.A.ifpossibleB.ifcanC.ifimpossibleD.ifyouarepossible30.Water,_____enough,canchangeintovaporquicklyA.whenheatedB.whileheatingC.whentobeheatedD.whenisheated31.—ShouldIlookupeachwordthatIdon’tunderstand?—No,turntoyourdictionaryonlywhen_____.A.youarenecessaryB.youneedC.necessaryD.youareneeded答案：1-5ABABC6-10CCDCC11-15CCDBB16-20ADCDB21-25DACDC26-31CBBAAC