| 1. …. has tried to do his best.TheyWeSteve Jobs and Bill GatesAlan TuringThem
|
| 2. That boy and his friend …. their way.have lostare losehas lostdo losthad lose
|
| 3. Bill Gates …. breakfast already.have havehas hashas hadhas havehave had
|
| 4. Alan Kay has borrowed my notebook since …. .Sunday3 hours4 daystomorrow
5 months |
| 5. …. he given your smartphone back already ?Am
HaveIsAreHas |
| 6. Steve Jobs and Bill Gates …. washed the car yet.not havehave nothavenot
has not |
| 7. Have you seen this program …. ?tomorrownowjustyetyesterday
|
| 8. Has Steve had lunch …. ?tomorrow
justlast nightalreadynow |
| 9. Mr.Johnson has taught Computer for …. .last yearlast monthyesterday1 yearstomorrow
|
| 10. He …. given it back yet.does notdo nothas not have notdid not
|