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Must/ can't

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  • It has colourful feather and a big peak. It______ be a parrot.
    must
  • It has two legs. It _____ be an arachnid.
    can't
  • It has a big shell to protect itself. It _____ be a mammal.
    can't
  • It has a blow hole to breath, it _____ be a dolphin.
    must
  • It's a mammal that flies. It _____ be bat.
    must
  • It's a small pet and it doesn't bark. It_____ be a cat.
    must
  • It's a bird and it swims. It_____ be a penguin.
    must
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