1 Do some people like animals? Do some people like animals or birds? Some people doesn't like animals, do they? What don't some people like? Who doesn't like animals? 2 What is very productive? This plant is very productive, isn't it? Is this plant or any a new factory very productive? What plant is very productive? Is this plant very productive? 3 Does he have blue eyes...? What does he have? Who has blue eyes and...? Does he have blue or green eyes? He has blue eyes..., hasn't he?
