Unit7 How much are these socks?单元词句梳理Section A(Grammar Focus-3c)必背句子&语法 1._ that brown sweater?那件棕色的毛衣多少钱?Its eight dollars.它8 美元。2._are those black trousers?那些黑色的裤子多少钱?_ nine dollars.它们9 美元。How much is How much Theyre