Question

--- las nueve y media de la noche. Era Eras Fue Eran

Answer 1

The correct answer is:  [D]:  "Eran" .
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Note:  This is the only conjugated "verb tense" that makes sense.

Furthermore, it makes sense, since it is a form of the Spanish verb, "ser" .
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Answer 2

Correct is->Eran las nueve y media de la noche .