Question

7. Replace the phruse of same meaning for the underlined idiom. Choose one
correct alternative. It was a great opportunity that comes once in a blue moon
(1) To take a chance
(2) The moon is blue
(3) Once in a while
(4) Not to miss the sight of the moon​

Answer 1

Answer:

(3) Once in a while

Explanation:

a blue moon doesn't exist however it's considered very "rare" and it means that it doesn't happen often at all