| 1. Steve Jobs and Bill Gates …. washed the car yet.havehas notnot
not havehave not |
| 2. Bill Gates …. breakfast already.has havehas hashave had
have havehas had |
| 3. Alan Kay has borrowed my notebook since …. .tomorrow
4 daysSunday3 hours5 months |
| 4. …. has tried to do his best.TheySteve Jobs and Bill GatesAlan TuringThem
We |
| 5. …. he given your smartphone back already ?AreIsHasHaveAm
|
| 6. That boy and his friend …. their way.do lostare losehad lose
have losthas lost |
| 7. Mr.Johnson has taught Computer for …. .tomorrow
last monthyesterday1 yearslast year |
| 8. Have you seen this program …. ?yesterday
yetnowtomorrowjust |
| 9. He …. given it back yet.have notdoes nothas not do notdid not
|
| 10. Has Steve had lunch …. ?alreadyjustnowlast nighttomorrow
|