What color are your two pens? Oh, I have got red one/ones and an black one/ones
one,one
Can I have your text marker, please? I`m sorry, I have only got broken one/ones
one
You can take two apples. Which one/ones do you want?
ones
What bananas do you like? Yellow one/ones or green one/ones?
ones,ones
Is this your pencil? No, mine is the blue one/ones
one
Alex has a new car, but Steve has an old one/ones
one
A: Which are your schoes? B: The brown one/ones
ones
I want to buy a new mobile phone. The old one/ones is broke.
one