0 votes 0 votes Which saying expresses the notion that time once gone will never come back? Every dog has its day. When one door shuts, another opens. Opportunity knocks but once. Strike while the iron is hot. I II III IV Quantitative Aptitude nielit2022feb-scientistc + – Lakshman Bhaiya asked Jul 21, 2022 • edited Aug 5, 2022 by Lakshman Bhaiya Lakshman Bhaiya 13.7k points 186 views answer comment Share See all 0 reply Please log in or register to add a comment.