Have you a color TV?Yes I have a good .A. it B. ones C. that D. one

问题补充：

--- Have you a color TV?

--- Yes, I have a good .

A. it

B. ones

C. that

D. one

答案：

A. it

B. ones

C. that

(答案→)D. one

解析：代词辨析。It指代上文提及的同一事物；one表示泛指，指代可数名词单数。One指代可数名词复数形式。表示泛指。That指代可数名词单数或者不可数名词，后面必须有定语修饰。句意：—你有彩电吗？—是的。我家有一台。这里的one指代a color TV.故D正确。