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Past Modals of Probability

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  • They ___ arrived by now. It's already midnight.
    must
    needn't have
    can't have
    should have
  • You ___ gone to the store. I already bought bread.
    must have
    should have
    could have
    needn’t have
  • I ___ trusted him. He lied to me.
    must have
    shouldn’t have
    might
    needn’t have
  • You ___ studied more. The exam was difficult.
    should have
    could
    had to
    must have
  • He ___ locked the door. It was wide open.
    must have
    can’t have
    should have
    needn’t have
  • She ___ known the answer. She looked so confident.
    needn’t have
    might not have
    must have
    can’t have
  • He ___ been more careful. He broke the vase.
    should have
    can’t have
    might
    must
  • The train was delayed. You ___ got up so early.
    needn’t have
    must have
    should have
    might have
  • We ___ taken the train. It was much faster.
    might not
    could have
    needn’t have
    must
  • You ___ said that. It hurt her feelings.
    might have
    can’t have
    shouldn’t have
    needn’t have
  • He ___ won the race. He wasn’t even competing.
    needn’t have
    should have
    must have
    can’t have
  • You ___ told me earlier! Now it's too late.
    must have
    needn't have
    should have
    might
  • He’s late. He ___ missed the bus again.
    could
    must have
    should have
    needn't have
  • You look tired. You ___ to bed earlier.
    must have gone
    had to go
    should have gone
    needn’t have gone
  • You ___ told me you were coming! I’d have baked a cake.
    should
    could have
    needn’t have
    can’t have
  • I ___ her first. Now she's upset.
    should have called
    needn’t have called
    must call
    had to call
  • I can’t find my phone. I ___ left it at work.
    should
    might have
    must have
    needn't have
  • They ___ seen the email. They’re acting surprised.
    might not have
    should have
    must have
    needn’t have
  • You ___ gone that way. It was blocked!
    could have
    must have
    needn’t have
    shouldn’t have
  • I ___ guessed Peter would be late. He always is.
    must have
    needn’t have
    can’t have
    might have
  • I ___ helped, but I didn’t know you needed me.
    needn’t have
    could have
    can’t have
    must have
  • We ___ brought snacks. There’s plenty here already.
    mustn't have
    should have
    didn't have
    needn’t have
  • She ___ been tired. She slept for 12 hours.
    might not have
    can’t have
    needn’t have
    must have
  • I ___ thought of that earlier. It’s so obvious now.
    must have
    should have
    had to have
    might
  • They ___ seen us leave. They were looking.
    should have
    must have
    needn’t have
    might have
  • They ___ heard me. I shouted really loudly.
    shouldn’t have
    could
    must have
    might have