Translation:The man sees the pyramid once a day.
"Ο άνδρας βλέπει την Πυραμίδα μία φορά την ημέρα" ?? Do not accept the "άνδρας".
It is shown in the incubator as accepted. Can you tell us which section of the course you found it in: the tree, lisenting, multiple choice, strengthen skills etc. It will help us correct the error.
When something is marked wrong...and you think it should have been marked correct...we want to see what it was so we can fix any problems. So, next time you should click "My answer should be accepted."
If you make a comment tell us What the exercise was, what you wrote, what the response from Duolingo was. How can we help if you just give us vague statements?
Looking forward to helping you out.