How do i make a good Questiosn and Answers sheet in excel?

Hi All,
I would want to use an excel sheet to keep a track of all questions i ask and the answers that i get from my client, for this i simply use a question column and a answer column. However i am not able to understand how can i keep a track of counter question asked for a answer given from the client. Can anybody help me with a format for the same ?

Thanks in advance.
-UG