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Modal verbs of deduction

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  • They ______ still be out!
    can't
  • He ______ go on a cruise. He is frightened of the ocean.
    can't
  • You ____ be right, but it's better if we check.
    You might be right, but it's better if we check.
  • John ___ be very happy about about his new car. He is always talking about cars.
    must
  • They ______ be away for the weekend but I'm not sure.
    could/may/might
  • The phone is ringing. It _____ be Charlotte; she said she would call this morning.
     The phone is ringing. It must be Charlotte; she said she would call this morning.
  • It ______ be true about a dinosaur living in Lake Telé in the Congo. It's impossible.
    can't
  • She's been revising 10 hours a day for 3 weeks. She ______ be exhausted.
    must
  • Dave reckons she's from The States but I think she ______ be from Scandinavia.
    could/may/might
  • The movie seems scary. It _____ be a lot of jump scares or just really creepy things.
    could
  • You drank 5 bottles of Coke? You ______ feel so sick!
    must
  • You ___ know Peter because he went to the same school that we went to but he is a few years younger than us.
    might
  • Nobody's answering. They ______ be out.
    must
  • You should pick up the phone. It ____be an important call.
    You should pick up the phone. It might be an important call.
  • She ____ be in love with him. She told me she hates him.
    She can't be in love with him. She told me she hates him.
  • I ______ go to the party but I'm not sure yet.
    may/might
  • He ______ be from the USA. He doesn't speak English.
    can't
  • I really think Real Madrid ______ lose the final of the King's Cup.
    could/may/might
  • That ___ be Danny. He said he was going on vacation this week.
    can't
  • I'm leaving work now but I ___ be a little late if there's traffic on the road.
    might
  • The window is broken. We _____ fix it before it rains again.
    must
  • The exam ______ be easy. You never know.
    may/might
  • He ______ be French, judging by his accent.
    could/may/might
  • A: Who's at the door? B: I don't know; it ____ be John.
    A: Who's at the door? B: I don't know; it may be John.
  • My Christmas present looks like an iPhone box, but it _____ be something in similar size.
    could
  • The puppies _____ look more like their mom or more like their dad... we will have to wait and see when they are born.
    could
  • He _____ be in class. I saw him at the library a minute ago.
    He can't be in class. I saw him at the library a minute ago.
  • If he drives a jaguar, he ____ be quite rich.
    If he drives a jaguar, he must be quite rich.
  • She ______ steal things from shops. She's rich and famous.
    can't
  • I'm sorry, you ___ be confusing me with someone else, that's not my name.
    must
  • He ____ be at the gym right now. Sometimes he goes there at this time.
    He might be at the gym right now. Sometimes he goes there at this time.
  • This ______ be the right answer but we'll have to check with your teacher to make sure.
    could/may/might
  • They ___ be at the mall still. I'm not sure because they have not called me yet.
    might
  • This is not possible. You ____ be serious!
    This is not possible. You can't be serious!
  • He ____ know the answer, he's the best in the class.
    He must know the answer, he's the best in the class.
  • You ______ be right but I'm going to check anyway.
    may/might
  • Tom _______ be working today - I just saw him at the gym
    can't
  • With luck, tomorrow ______ be a sunny day.
    could/may/might
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