Question

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

Answer 1

a.  A piece of an asteroid was found in a valley.

b.   The ruins of an ancient city was discovered by a famous archelogist.

c.  The tallest tree in the tropical jungle will be  cut  down by a  construction  company

d.  A bag with $300.000 was left in a taxi