讨教一个问题：sweets ,vegetables and fruit 后是跟is还是are

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 The vegetables and fruit are ( ) There ____ some fruit and vegetables in the kitchen .是填is 还是 my favourite fruit () pears and bananas.是is 还是are Vegetables and fruit are h_for us. I think vegetables and fruit are () us Fruit and vegetables are healthy food but hamburgers and can fruit and vegetables 蔬菜和水果是健康的 The vegetables and fruit are ______ eating vegetables and fruit makes us health对么?是用health还是heal fruit and vegetables are healthy food 为什么food用单数?