Question

They won't come now----? tag Q

Answer 1

They won't come now, will they?
Question tag is will they?

The sentence is in negative, so we have to write question tag in positive

Answer 2

Hi friend
Here's the correct answer :

The sentence - They won't come now (Negative form)

Question tag :
They won't come now, will they? (Positive form)

Hope this helps you