Question

Rani came to work late. ( frame questions in the past using Did: )

Answer 1

Rani did not come yo work late .

Answer 2

Question (in assertive sentence): Rani came to work late.

While converting an assertive sentence into an interrogative one, we have to omit the full stop"." and replace it with a question mark "?".

Answer (in interrogative sentence): Did Rani come to work early?

Thank you. Hope this proves to be useful to you. Keep posting more questions. I will try my best to answer them.