One/ones

This bag is very old. I need a new______

Small pineapples are sweeter than big______

The new smartphones are much faster than the old _____

Which is your car, the black ________ or the white __________?

She needs new shoes, the old ________ are too small. 

If you buy two bottles of water, you get a third ________ free.

These dresses are expensive. Are there any cheap ________?

Jack has three pens – a red ______ and two green ________ . 

I would like to have a cupcake – the red ________ looks great.

I would like to have some cupcakes – the green _________ look great.