Answer:

1.The letter was mailed by Miguel.

2.The ball was chased by the players.

3.A vaccine was discovered by the American Scientists.

4.A short story entitled the Black Cat was written by Edgar Allan Poe.

5.New office policies was implemented by the manager.

6.A sarcastic review was written by a critic.

7.The entire house was painted by Romy.

Explanation:

Understand the given example,use your mind