Choose little / a little or few / a few

1. There was (little/a little/few/a few) milk in the bottle. It was nearly empty.
2. "When did Phil and Nick go out?" "[Little|A little|Few|A few] minutes ago."
3. It's not easy for me to decide now. I need [little|a little|few|a few] time to think it over.
4. There was [little|few|a few] traffic, so we managed to come on time.
5. The transportation isn't very good at night — there are [little|a little|few|a few] buses after 11 o'clock.
6. "Would you like some pasta?" "Yes, [little|a little|few|a few], please."
7. I'd like to practise my Chinese more, but I have [little|a little|few|a few] opportunity to do that.