题目内容：

The dress______(如此便宜；cost) that she would like to buy several.

优质解答

costs so little.此处由后面的that和题中的 如此 知这里用如此 以至于的句型,即so that.又dress单三则cost加s,便宜此处不可用cheaply,因为此副词修饰cost,只能用多少表示,所以填costs so little