| 1. He …. given it back yet.has not have notdo notdoes notdid not
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| 2. Has Steve had lunch …. ?alreadyjustnowlast nighttomorrow
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| 3. That boy and his friend …. their way.have lostare losehas lostdo losthad lose
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| 4. …. he given your smartphone back already ?AreIsHasHaveAm
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| 5. Mr.Johnson has taught Computer for …. .1 yearsyesterdaylast yearlast monthtomorrow
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| 6. Alan Kay has borrowed my notebook since …. .Sunday5 months3 hours4 daystomorrow
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| 7. Steve Jobs and Bill Gates …. washed the car yet.havehas notnot
not havehave not |
| 8. …. has tried to do his best.Alan TuringWeThem
TheySteve Jobs and Bill Gates |
| 9. Have you seen this program …. ?yettomorrowjustnowyesterday
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| 10. Bill Gates …. breakfast already.has hadhas havehas hashave havehave had
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