Answer:
Because if you don't you could make someone feel sad or mad depending on what you're talking about.
Explanation:
Answer: A: My sister is excited that her swim team earned a championship and that her debate team won its first tournament.
Explanation: In this sentence the common word "that" is used ("that her swim team" and "that her debate team") leading me to believe that A is the answer.
Answer:
The first sentence has an idiom: over the moon
Explanation:
Both the second and 3rd sentence do not contain figurative language
the 4th sentence contains a simile not an idiom