Complete the second sentence in each pair to mean the same as the first. Use modals in the past.
1 He can't have been at home.
He must have been out.
2 I shouldn't have refused the invitation.
I ________________ accepted the invitation.
3 She may not have passed the exam.
She ________________ failed the exam.
4 They must have arrived late.
They ________________ arrived early.
5 You can't have switched the TV off.
You ________________ left the TV on.
6 We should have paid by credit card.
We ________________ paid with cash.
7 They couldn't have stolen the car during the day.
They ________________ stolen the car at night.
8 The pilot might not have died in the accident.
The pilot ________________ survived the accident.