It should contain all of the above with the exception of a strong argument as to why the reader is wrong. There would be no need for that unless you are just being rude.
The answer to your question is a complex sentence.
Good practices:
Speaking clearly
Standing straight and tall
Controlling your pacing
Speaking with the same volume
Moving your hand often to keep attention
Bad practices:
Looking at your notes the entire time
Answer:
8. Who is that?
9. What is he like?
10. Who are they?
11. His wife has long, curly hair.
13. I am in my twenties.
