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Help the detective finish her report! She needs to document what happened before she got to the crime scene.
Select ALL the sentences that correctly use the Past Perfect tense to describe these earlier events.
The correct answers are: When I arrived, the thief had already escaped through the bathroom window. The suspect had vanished by the time I reached the bank.
We use the Past Perfect (had + past participle) to show that one action happened before another action in the past.
"Has escaped" is Present Perfect and doesn't fit the past narrative, while "had vanishing" uses the wrong verb form (it should be the past participle, not the -ing form).