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Tense (Present Simple/Continuous/Perfect and Pas ...

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  • Animals ___ (evolve) over millions of years.
    have evolved
  • Scientists ___ (not discover) the cure for the common cold yet.
    Scientists haven't discovered the cure for the common cold yet.
  • Air pollution levels ___ (not decrease) significantly in recent years.
    Air pollution levels haven't decreased significantly in recent years.
  • Most scientists ___ (believe) that climate change is real.
    believe
  • Water ___ (consist) of hydrogen and oxygen.
    consists
  • She ___ (be) interested in history since childhood.
    has been
  • He always ___ (bike) to school when he was a kid.
    biked
  • This recipe ___ (not contain) any sugar.
    This recipe doesn't contain any sugar.
  • When/the dinosaurs/go/extinct/?
    When did the dinosaurs do extinct?
  • The prices of groceries ___ (rise) rapidly right now.
    are rising
  • The team ___ (develop) a new software application this month.
    is developing
  • When mixed together, red and blue ____ (make) purple
    When mixed together, red and blue make purple.
  • The ice caps ___ (melt) due to global warming.
    are melting
  • Why/the sky/appear/blue/?
    Why does the sky appear blue?
  • The prices of groceries ___ (rise) rapidly over the past 5 years.
    have risen
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