Apples are one of my favourite fruit?是fruit还是fruits 请指教,

Apples are one of my favourite fruit?是fruit还是fruits 请指教, apples and bananas are both my favourite （）是fruit 还是fruits 是Apples are a kind of fruit还是Apples are a kind of fruits Apples are my favourite fruit. My favourite fruit is banadas and apples.My favourite fruits Apples,bananas,pears and oranges are fruit 还是fruits? oranges and apples are fruit(还是用 fruits) my favourite fruit () pears and bananas.是is 还是are fruit 到底是可数还是不可数 There are many kinds of fruit 还是fruits 是用is 是many kinds of fruits还是 many kinds of fruit father's,favourite,fruit,my,apples,is My favourite fruit are apples.为什么用are,而My favourite food is