用 d (ones)
one可以做代词,像it似的.
前句用的复数apples,所以后句要用one指代的苹果也应该是复数,one就要用复数形式ones.
我给你再写个例子,看看能不能帮你理解.
都拿苹果举例,
I saw u brought some green apples for me; but i don't like them.
I saw u brought a green apple for me; but i don't like it.
it指代数量是1的东西,One指代数量是1的东西；
them指代复数的东西,ones指代复数的东西.
希望有所帮助.