1. 3. 4. Sorry to be late but anyone else who is now doing this yw:)
"Had been cleaning" is in the past perfect progressive tense.
The past perfect progressive tense indicates a continuous action that was completed sometime in the past.
SUBJECT + HAD + BEEN + PRESENT PARTICIPLE
In Native American stories, the salmon often represented the creator, the one who teaches humans to “live” (Overview: 'The Powwow at the End of the World'.