A. Happening only once in a lifetime
B. An unforgettable experience
C. Happening only rarely
D. None of these
🧠 Explanation:
The idiom “once in a blue moon” means happening only rarely. Knowing this helps students improve English vocabulary, ensuring clearer communication. Understanding idioms is useful for essays, exams, or conversations in school. This phrase is key for English classes, helping students express rarity vividly. Learning idioms enhances language skills, making it easier to analyze texts or communicate effectively in academic projects or daily scenarios where colorful expressions improve clarity and engagement.
