The socks cost so cheap that he bought several pairs.
问题描述：
The socks cost so cheap that he bought several pairs.
对这一句话进行改错
把错误的地方写下来再写出正确答案,并说明理由或原因
答
cheap改成cheaply,cost是动词哈,不能用形容词修饰,而要用副词.