lettuce is a kind of vegetable.这个句子对吗?用lettuces还是什么?

lettuce is a kind of vegetable.这个句子对吗?用lettuces还是什么? Tomatoes is a kind of vegetable这句话对吗? What letter is a kind of vegetable? L______ is a kind of vegetable. --------（卷心菜）is a kind of nice vegetable. tomato kind a vegetable of is (连词成句） This is what kind of cheese这个句子对吗 和下面句子的意思有啥区别 What kind of a kind of vegetable 中vegetable 需要加s Tomatoes are a kind of vegetable. 几道英语智力题What letter is a kind of vegetable?What letter is a k Which letter is a kind of vegetable?这句话的意思以及答案. 连词成句（英语）is,kind,a,green,of,cabbage,vegetable