—David you left your English book on the desk?—It isn’t . I think it is .A. mine; Nick’sB

问题补充：

—David, you left your English book on the desk?

—It isn’t . I think it is .

A. mine; Nick’s

B. mine; Nick

C. my; Nick’s

D. my; Nicks’

答案：

(答案→)A. mine; Nick’s

B. mine; Nick

C. my; Nick’s

D. my; Nicks’

解析：句意：戴维，你把你的英语书忘在了桌子上了。它不是我的，我想他是尼克的。mine我的英语书，Nick’s尼克的，名词所有格形式。故选A