How much does this milk cost 是对的,因为谓语动词是COST,故不能用IS
this pair of jeans matches you sports shoes.是对的,因为主语中心词是pair 是单数,不是matches
How much does this milk cost 是对的,因为谓语动词是COST,故不能用IS
this pair of jeans matches you sports shoes.是对的,因为主语中心词是pair 是单数,不是matches