Answer:
<u>о Have you ever noticed that many great conversationalists do not talk as much as they listen?</u>
<u>о If you are really interested in gaining energy, you must vigorously spend what you have.</u>
<u>о History is a subject about the past.</u>
<u>о Our school closes during snowstorms.</u>
<u>Explanation:</u>
A well-written topic sentence should easily inform readers what the other paragraph of a sentence is about.
Hence, we could notice that each of those sentences gives the reader insight into what to expect from the other paragraph.
For example, the one that says, "<em>History is a subject about the past," </em>tells the reader to expect other sentences in the paragraph would be to supportive of this claim.