Also: Είναι αυτό το φίδι μεγάλο;
Yes, thank you it is included as an alternative.
Also: Είναι το φίδι αυτό μεγάλο;
Thank you I've added it to the list of accepted translations. And thanks for making the report on the exercise page that helps a lot.
Human pronunciation: https://forvo.com/phrase/είναι_μεγάλο_αυτό_το_φίδι%3B/