| 1. …. he given your smartphone back already ?HasHaveIsAreAm
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| 2. That boy and his friend …. their way.do losthave losthas lostare losehad lose
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| 3. He …. given it back yet.have notdoes nothas not do notdid not
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| 4. …. has tried to do his best.TheySteve Jobs and Bill GatesAlan TuringThem
We |
| 5. Steve Jobs and Bill Gates …. washed the car yet.havenot havehave nothas notnot
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| 6. Mr.Johnson has taught Computer for …. .last month1 yearslast yearyesterdaytomorrow
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| 7. Have you seen this program …. ?yettomorrowjustnowyesterday
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| 8. Alan Kay has borrowed my notebook since …. .4 daysSunday3 hours5 monthstomorrow
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| 9. Bill Gates …. breakfast already.has hadhas havehas hashave havehave had
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| 10. Has Steve had lunch …. ?last nightnowalreadyjusttomorrow
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