Choose the correct form: "The documents ___ by the time the auditor arrived."

Correct answer: C. had been filed

The filing was completed before another past event (the auditor's arrival), so the past perfect passive "had been filed" is correct.

hard

Answer and explanation

The correct answer is C. had been filed

The filing was completed before another past event (the auditor's arrival), so the past perfect passive "had been filed" is correct.