单项选择--Istheringmadeof         silver?   --Yes.Itismadeo...

问题详情：

单项选择

-- Is the ring made of          silver?

    -- Yes. It is made of          best silver in our factory.

    A. a; the              B. /; the             C. a; /             D. /; a

【回答】

B

知识点：冠词

题型：选择题