Active vs. Passive

Would you change the following sentences? If not, why not? Rewrite those that need clarification.

1. Rubber coated bullets were fired into the crowd by police in riot gear.

Active: Police in riot gear fired rubber coated bullets into the crowd.

2. Later in the day, the employees were informed of the layoffs by the boss himself.

Active: Later in the day, the boss informed the employees of layoffs.

3. With five seconds left, a three-point shot was missed by LeBron James.

Active: LeBron James missed a three-point shot with five seconds left.

4. Participants in the survey were asked about their changes in political affiliation.

Active: The survey asked participants about their changes in political affiliation.

5. Tall buildings and mountain roads were avoided by Raoul because he had such a fear of heights.

Active: Raoul avoided tall buildings and mountain roads because he had such a fear of heights.

6. The bill is being considered by the Legislature.

Active: The Legislature is considering the bill.

7. The tiny island has been destroyed by the earthquake.

Active: An earthquake destroyed the tiny island.

8. The class is reading the book.

This isn't passive

9. An experimental operation was performed at the hospital yesterday.

I wouldn't change this sentence because we don't know anything about who performed the experimental operation.

10. The wheat field was covered by debris from the downed airliner.

Active: The downed airliner covered the wheat field in debris.