-Isthispenyours?-No it'snot________．It'sEisa's．A.IB.meC.myD.mine

问题补充：

-Is this pen yours?-No, it's not ________．It's Eisa's．A.IB.meC.myD.mine

答案：

D解析mine为名词性物主代词，在本句中相当于my pen．