Сhoose the correct answer a), b) or c)1. My sister has

Сhoose the correct answer a), b) or c)

1. My sister has already got a good job, but she wants... .
a) a better ones
b) better one
c) a better one

2. We've got some red wine, but we haven't got any... .
a) white
b) white one
c) a white one

3. I'm looking for a new coat. I'd like to buy ... with a button-down collar.
a) a one
b) one
c) ones

4. Do you like these chairs more than... ?
a) those one
b) those ones
c) those

5. They are nice but I really like ... .
a) the red one
b) a red one
c) red one