Here's the answer key for your questions:
Question 1:
Answer: class email
Question 2:
Answer: a friend from your dance group
Question 3:
Answer: Analogy
Question 4:
Answer: Persuasion
Question 5:
Answer: To transmit culture
Question 6:
Answer: Horizontal communication
Question 7:
Answer: The CEO making a company-wide announcement
Question 8:
Answer: To manipulate
Question 9:
Answer: Using special effects
Let me know if you need further assistance!