Question: ‘Once in a blue moon’ means-Milon | September 1, 2018 | English Language and Literature, , 38 BCS Preliminaryalwaysvery rarelynearlyhourly AnswerB Description:-No description foundYou may also like:Idioms & Phrases 16Idioms & Phrases 05Idioms & Phrases 03Idioms & Phrases 06Mobile Display৩৮তম বিসিএস লিখিত প্রশ্ন ইংরেজি