Explain briefly about passive voice?

"dogs make wonderful pets because they us stay happy and healthy"the topic sentence is "dogs make wonderful pets" i need writing a sentence that is unrelated to the topic and can be eliminated.

Plz halp. which statements are true about theme? check all that apply. 1.) themes are observations about life. 2.) themes can be stated in a sentence. 3.) themes and topics are the same thing. 4.) themes are messages a text conveys about a topic. 5.) examples of themes include loyalty, corruption, and greed. 6.)themes are rarely stated directly and need to be inferred by the reader.

Explain how dave’s search for adulthood in ,the man who was almost a man” reflects the africa-american desire to escape the poverty of the south at the time the story was written.