Certainly! Here are the answers to your questions:
Question 1: What is the meaning of bombshell in this sentence?
Answer: unexpected
Question 2: In which of the following answer choices do the italicized words communicate a literal meaning?
Answer: Why won't you tell me what's wrong? It's been eating at me for days.
(Unlike the other phrases which are idiomatic expressions, this one is a straightforward question about someone’s feelings).
Question 3: What is the meaning of the italicized words in the following sentence?
Answer: a very small amount
Question 4: When Grandpa says "Horror movies aren't really my cup of tea," he means that he—
Answer: doesn't like horror movies
Question 5: When Wyatt says "I'm flat broke," he means that he—
Answer: has no money
If you need any more help or further explanations, feel free to ask!