I have got a chair___. [A] to sit [B] for to sit on [C] advantage [D] for sitting 选哪个?为什么?

I have got a chair___. [A] to sit [B] for to sit on [C] advantage [D] for sitting 选哪个?为什么?

[D] for sitting
have got sth for (doing) sth 常用搭配
我有把用来坐的椅子

[A] to sit

如果你的答案不是a，那是因为出了错误（书或其他），连标点符号都不符合英文规则。