pls help me the question is... Change the sentence into Idiomatic Urdu

1.	pls help me the question is... Change the sentence into Idiomatic Urdu. 1- he rarely did that pls help ill mark u.
Answer» ANSWER: He did that once in BLUE MOON.

pls help me the question is... Change the sentence into Idiomatic Urdu. 1- he rarely did that pls help ill mark u.

Answer»

He did that once in BLUE MOON.