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Past Modals of Probability

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  • You ________ seen Billy. He’s on holiday at the moment.
    can't have
  • They ________ have got lost. I gave them very clear directions.
    can't have
  • Sarah didn't come yesterday. She ________ known that we were meeting.
    may/might not have
  • Carl didn't go to Rachel's party. He ________ known about it.
    may/might not have
  • They ________ gone to bed early – there are no lights on in the house.
    must have
  • Suzy’s flight ________ been cancelled because it was snowing in the London area this morning.
    must have
  • They definitely received the email, but they ________ understood it properly.
    may/might not have
  • I think I ________ lost that book Jack lent me. I’ll look for it again tonight.
    may/might/could have
  • I suppose Jane ________ just forgotten it was your birthday, but it’s not like her.
    may/might/could have
  • Fred ________ gone out. His car is in the garage.
    can't have
  • Laura wasn't at school last week. She ________ been sick.
    may/might have
  • You ________ seen Helen. She was standing right next to you at the party!
    must have
  • I think the kids ________ gone swimming. They’ve taken towels from the bathroom.
    must have
  • You ________ spent so long in the sun. You look sunburnt.
    must have
  • I ________ left my bag in the car. I definitely had it when I got in.
    can't have
  • You ________ heard, but we won the race!
    may/might not have
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