Convert the sentence "Sana said, 'I will do it now or never'" into indirect speech.

Explanation

When changing direct speech to indirect speech, the tense usually shifts back. Since the original sentence is in the future tense ('will do'), it changes to 'would do' in indirect speech. Also, time expressions change accordingly: 'now' becomes 'then'. Hence, the correct indirect form is: Sana said that she would do it then or never.