—He's never late for school, _________? —_____, never. He always gets to school on time.

——You aren’t a stranger, are you?——       , don’t you remember        me at the school gate ten minutes ago?

Tom hardly hurt himself in the accident, ________?

–Your mother’s never seen a 3D film at the cinema, has she?--____, but only once.

--Spell“color”，please.---______.