It's an idiom because (It's) pretty good; (it's) not as unpleasant as one may have originally thought.
Answer: C
Explanation: It sounds like the sunset is having a picnic, even though what it really means, is that we saw a sunset while having a picnic.
Answer:
....?
Explanation:
LETTERS ASKING FOR OR GIVING ADVICE
Asking for advice.
I am writing to ask if you could help me with ….
I would appreciate it if you could give me some advice about ….
I am writing to ask for your advice /I would be grateful if you could offer your advice ….
Could you possibly offer your advice
