Only five years ago, there ______a shortage of computer specialists.A、wasB、were

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问题 Only five years ago, there ______a shortage of computer specialists.

选项 A、was
B、were
C、has been
D、have been

答案 A

解析 The simple past tense is required. Choice (B) is past tense but does not agree with the singular subject shortage. Choice (C) is present perfect. Choice (D) is present perfect and does not agree with shortage.

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Only five years ago, there ______a shortage of computer specialists.A、wasB、were

Theofficemanagerwantsthecomputers______bytomorrow.A、willbeinstalledB、i

Onlyfiveyearsago,there______ashortageofcomputerspecialists.A、wasB、were

Whenpersonalcomputersfirstbeganshowingupinofficesaroundtheworld,p

Thesedays,everybodybuyscomputersoftware.Consumerspurchaseallkind

Asfortheshortage,Isuggest______thequantityinyourfutureshipment.A、your

Comco,Inc.,becametheleadingsupplierofcomputer______lastyear,lessthant

Towhomitmayconcern,AgoodnumberofrequestsforyourP-4computers(150).

Youmaybreachthisagreementifyousendcopyrightedcomputerfiles_______.A、el

Avarietyofpicturesarescannedintoaformofproper_____thatcomputerscanr

Worldleaderswere______totakeactionagainsttheincreasingfoodshortagesin

[img]2016m3x/ct_eyyjsbz2013j_eyyjsbcloze_0089_20163[/img]Manyanimalswhich

TheAmericanmedicalschoolisnowwellalonginthesecondcenturyofits

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A. B. C. D.

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