Tomatoes are good vegetable还是vegetables?

Tomatoes are good vegetable还是vegetables? for vegetable还是for vegetables? Tomatoes are a kind of vegetable. I think the vegetables are good for me还是I think vegetables a Carrots and broccoli are ____.A.vegetable B.vegetables Potatoes are my favourite vegetables.vegetable是否要加s? 是lots of vegetable还是lots of vegetables My father likes vegetable还是vegetables.为什么?急 Vegetable vegetables 区别急 Vegetables fruit and fish are/is good for...选择are还是is Eating vegetables and fruit (is还是are)good for our health noodles with tomatoes用is还是are?