Hey, how do I download it?
This is a warmer, and there is nothing to download. It's just an idea for your lesson, not a worksheet.
Put a S in the hot seat. The rest of the class (including the T) fire questions at the S to try and get him/her to say yes or no.
A demonstration by the T may help for a lower level class ( ‘I don’t think so’, ‘that’s true’, ‘that’s not quite right’, ‘ ‘ah huh’, ‘sometimes’, ‘I do’ etc.)