alleryStart learning →An event happens "once in a blue moon". How often is that?
AEvery night
BVery rarely
CEvery week
DOnce every day
Answer & Solution
Correct answer: B. Very rarely
Once in a blue moon is an idiom for something that happens very rarely.
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Related questions
Which one is a book that gives the meanings of words?One word for a group of ships under one command is a ____.One word for a place where books are kept for reading is a ____.One word for a person who travels in a spacecraft is ____.One word for a child who has lost both parents is ____.A person who writes books is called a(n) ____.Which pair is an adjective followed by a noun?How is a collocation different from an idiom?