I want very much to buy this color TV set,but I can’t affordA one_英语解答

I want very much to buy this color TV set,but I can’t afford
A one B it C that D this
这个为什么要选 B 啊

人气：342 ℃　时间：2020-04-06 22:06:15

解答

it代表后面的buy this color TV set,不记得为啥了,习惯成固定用法了