[ابو بيشو]

If there is no auxiliary verb in the sentence then ‘do’ is used in the question tag.
Catherine says:
Well done, Adek, this is a lovely dialogue and you have used a lot of question tags! Most of them are correct, but we need to look at one or two of them again:

John: Yes, I am. But when you work all day long you have no time for anything else,don't you?

This is a very interesting sentence. The verb 'have' is positive, but the phrase 'you have no time', has a negative aspect - so the question tag should be positive. A correct version would be:

John: Yes, I am. But when you work all day long you have no time for anything else,do you?