问题描述： The sweaters are_sale.They are very cheap. 1个回答 分类：英语 2014-09-21 问题解答： 我来补答 onon sale 打折销售The sweaters are on sale.They are very cheap.这些毛衣正在打折销售,它们都很便宜.（明白了吗）不会的请继续追问哟 展开全文阅读
