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Past Modals for speculation and / or deduction

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  • The dog __________(chase) you but it didn't. ( Past possibility)
    could have chased
  • Lewis ______________(fall) from the ceiling. ( 50% possible but not sure)
    might have fallen
  • He ___________(sleep) through his alarm last night. (Past Possibility)
    could have slept
  • He _________________ arrived by now. It's only a 20 minute journey!
    must have
  • You_______(come) to the party yesterday, it was fun. (past advice or regret)
    should have come
  • He ____________ tried to fix the roof himself. Everyone knows that he is a real handyman.
    may have
  • She __________(volunteer) at the hospital if she had the time. ( Past willingness
    would have volunteered
  • He _______________ known it was your birthday. Otherwise, he would have wished you a happy day.
    can't have
  • You _____________(shout) at your boss. (Past negative advice/regret)
    shouldn't have shouted
  • She _________(miss) your call. (50% possible but you're not sure)
    might have missed
  • Jesse __________(win) the fight if she had her supersuit. ( Past possibility)
    could have won
  • You _________(think) about the consequences before you did this. ( 100% possibility)
    must have thought
  • I ______ ( start) saving money years ago! (past advice/regret)
    should have started
  • He _______(take) a warm coat, but he didn't see the weather forecast. (past willingness)
    would have taken
  • The thief _________ (steal) the jewels during all of the panic. ( 100% possible)
    must have stolen
  • The boss is in a terrible mood. The meeting _________________ been good.
    can't have
  • They __________(get) lost in the woods. (100% certainty)
    must have gotten
  • Eddie _____________ (help) her if she asked for it. (Past willingness)
    Would have helped
  • I left my bicycle in front of the library, but it's disappeared. Someone ____________ stolen it.
    must have
  • Andrew didn't study for the test, but he's passed. I think he ________________cheated.
    might have / may have
  • I'm sorry, but Samantha is not here. It's 5:00 p.m., so she _________________ already left the office
    must have
  • They ________ (do) a lot more with their presentation. ( past possibility)
    could have done
  • The taxi driver ___(offer) to drop them off free of charge. ( past willingness)
    would have offered
  • I had to wait 45 minutes for a bus yesterday. It _______________ been an accident or maybe a strike.
    might have / may have
  • We ___________(foresee) that change of plans. (Past negative possibility)
    couldn't have foreseen
  • I ______________(forget) my cellphone during the rush to the bus. ( 100% possible)
    must have forgotten
  • He _______________ bought a new car. He told me he didn't have any money.
    can't have
  • She ____________________ studied really hard. She passed all her exams with excellent grades.
    must have
  • They _____________(leave) it when the fire started. (50% possibility but not sure)
    might have left
  • Sarah __________________ been so happy when she found out she was being promoted!
    must have
  • I'm sorry, but Samantha is not here. it's 5:00 p.m., so she _________________ already left the office
    must have
  • The boys ___________________ (finish) their homework before playing video games. ( Past advice or regret)
    Should have finished