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1. He __________ gone,
even if he had wanted to, as he had to work late that evening.
should not have
2. We know perfectly well what we __________ done.
But itīs a bit late to worry about that now.
3. Where do you suppose Pete is? He __________ forgotten about the meeting.
4. I __________
been mistaken. It canīt have been Peter
I saw kissing that gorgeous girl.
5. He __________
asked you to the party, if heīd known you were in town.
6. They __________ fired John.
He was a good worker and I think theyīll regret it
must not have
7. They __________
work last Friday afternoon, so they went for a picnic.
didn't have to
didn't ought to
8. If he had wanted to, he __________
been a doctor. He was clever enough
9. She __________
left it too late to apply to university
ought not to have
10. You really should
drive more carefully! You __________ killed someone!