How do we know that lighthouse have existed for at least 3,000 years

Ineed on this app i was at ambitious but then all of the sudden i got put back to about 30 points. is there something i can do about this, because i lost all of my progress in this app.

If this were a fictionalized account, instead of a memoir, which might be the opening sentence? a) i am not your prisoner. b) i find myself in prison. c) you have taken me prisoner. d) black hawk had been taken prisoner.

Select all of the grammatical structures which require objective pronouns