The report ___ by the manager before the meeting started.
Answer and explanation
Correct answer: D. had been checked
Una acción pasiva anterior a otra en el pasado lleva had been + participio: had been checked.
Respuesta: had been checked.
Por qué no las otras: Has checked y has been checking son formas activas, y have been check no usa el participio.
Respuesta: had been checked.
Por qué no las otras: Has checked y has been checking son formas activas, y have been check no usa el participio.
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