高二英语题目.求答案.请大家帮帮忙
1.Hehasbeenwalkingonairsincehe__thejobhehasbeentryingsohardfor.
A.offeredB.wasofferedC.wasofferingD.hadoffered
2.Ourplayers__verywellinthebasketballmatchthedaybeforeyesterday.
A.performedB.wereperformedC.wereperformingD.hadperformed
3.They__intouchwitheachothersincetheygraduated.
A.keptB,havebeengettingC.havekeptD.havegot
4.Justwaituntilthechildren__downbeforeyoustartyourlesson.
A.aresettlingB.settledC.hadsettledD.havesettled
5.Hisfailureintheexamsuggestedthathe__hardenough.
A.notstudyB.hadnotstudiedC.shouldnotstudyD.hasnotstudied.
6.Itwaswhenhe__thatMr.Greencuthimself.
A.hasbeenshavingB.isshavingC.wasshavingD.hadbeenshaving
7.Thedinosaurs__becausetheycouldnotadapttothechangingenvironment.
A.disappearedB.weredisappearedC.weredisappearingD.hadbeendisappeared
8.Youmustlearntodefendyourselfwhenyou__.
A.attackB.areattackingC.wereattackedD.arebeingattacked
9.Scienceandtechnology__theworldinthetwentiethcentury.
A.transformedB.transformsC.weretransformedD.hastransformed
10.Wehadtowalktoschooltwoyearsago,butnowwecantakethesubway.
Thingsalways__.
A.changedB.havechangedC.hadchangedD.change.
11.Howheavytherainis!Look!Theriverisrisingrapidly.
Ithinkit'sverydangerousbecauseit__foraboutforty-eighthours.
A.rainedB.hasbeenrainingC.hasrainedD.hadrained
12.Listen!MissWangissinginginthenextroom.
That'simpossible.She__toanewapartmenttheotherday.
A.movedB.moveC.wasmovingD.moves