Convert this passive voice statement into an active voice statement A countless number of countries were placed on lockdown.

To change passive voice to active voice, make the agent of the sentence into the subject, and turn the old subject into the object. For example, this is a passive sentence: “The article is being read by most of my class.” The agent is most of my class, and the subject is the article.

Explanation:

Lockdown was placed on a countless number of countries.

Explanation:

You just need to flip the statement.

"the sandy walls seemed to collapse in on themselves"

and

"the bloodshot waters seemed to have no bottom"