Cangue these sentences from active to passive voice?
Cangue these sentences from active to passive voice. Introduce the doer of the action only if it's important to know it. A. someone found a piece of an asteroisd in a valley. B. A famous archelogist discovered the ruins of an ancient city. C. A construction company will cut down the tallest tree in the tropical jungle. D. A woman left a bag with $300. 000 in it in a taxi.