—Is this book?— No it isn’tbook is at home. A your; Your B. her; My C. her; His D. Y

问题补充：

—Is this book?— No, it isn’t. book is at home.

A your; Your B. her; My C. her; His D. Your; My

答案：

解析：本题符合句意的为D项，意思为这是你的书吗？不，它不是，我的书在家里。故本题选D。