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Cornerstone 2 Unit 3

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  • I __ thinking hard.
    am
  • My brother and sister __ playing outside.
    are
  • I __ sitting in a chair.
    am
  • Mom and Dad __ watching TV.
    are
  • Bob __ riding a bike.
    is
  • I ___ doing my homework.
    am
  • He __ talking to a friend .
    is
  • Jane __ eating ice cream.
    is
  • You __ kissing a frog.
    are
  • Peter and Jane __ reading.
    are
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