高中时态专项练习1.SalesofCDshavegreatlyincreasedsincetheearly1990s,whenpeople________toenjoytheadvantagesofthisnewtechnology.A.beginB.beganC.havebegunD.hadbegun2.Turnonthetelevisionoropenamagazineandyou________advertisementsshowinghappyfamilies.A.willoftenseeB.oftenseeC.areoftenseeingD.haveoftenseen3.—IhearJanehasgonetotheHolyIslandforherholiday.—Oh,hownice!Doyouknowwhenshe________?A.wasleavingB.hadleftC.hasleftD.left4.—WhatwereyoudoingwhenTonyphonedyou?—Ihadjustfinishedmyworkand________totakeashower.A.hadstartedB.startedC.havestartedD.wasstarting5.I________younottomovemydictionary—nowIcan’tfindit.A.askedB.askC.wasaskingD.hadasked6.—HasSamfinishedhishomeworktoday?—Ihavenoidea.He________itthismorning.A.didB.hasdoneC.wasdoingD.haddone7.—What’sthatterriblenoise?—Theneighbors________foraparty.A.havepreparedB.arepreparingC.prepareD.willprepare8.Nowthatsheisoutofajob,Lucy________goingbacktoschool,butshehasn’tdecidedyet.A.hadconsideredB.hasbeenconsideringC.consideredD.isgoingtoconsider9.Theteacher,with6girlsand8boysofherclass,________visitingamuseumwhentheearthquakestruck.A.wasB.wereC.hadbeenD.wouldbe10.Thediscussion________alivewhenaninterestingtopicwasbroughtin.A.wascomingB.hadcomeC.hascomeD.came11.Becausetheshop________,alltheT-shirtsaresoldathalfprice.A.hascloseddownB.closeddownC.isclosingdownD.hadcloseddown12.Let’skeeptothepointorwe________anydecisions.A.willneverreachB.haveneverreachedC.neverreachD.neverreached13.Mymindwasn’tonwhathewassayingsoI’mafraidI________halfofit.A.wasmissingB.hadmissedC.willmissD.missed14.ItissaidinthebookthatThomasEdison(1847—1931)________theworld-leadinginventorforsixtyyears.A.wouldbeB.hasbeenC.hadbeenD.was15.—YouwereoutwhenIdroppedinatyourhouse.—Oh,I________forafriendfromEnglandattheairport.A.waswaitingB.hadwaitedC.amwaitingD.haswaited16.Shehassetanewrecord,thatis,thesalesofherlatestbook________50million.A.havereachedB.hasreachedC.arereachingD.hadreached17.Hekeptlookingather,wonderingwhetherhe_