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Vts nair Posted 11 years ago
Grammar

They must have gotten mixed up.

They must have gotten mixed up.

which one is the equivalent to above sentence ' They must have been mixed up or They must have mixed up'.
  

Top answer

The first.

  • The first.
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2 Answers
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These are passives and have the same meaning:

They must have gotten mixed up.
They must have been mixed up.

They must have mixed up is active, but it’s not correct because mix in this sense requires an object.

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