—Have you seen book on the desk?—Is it English book? I saw it just now.A. the; / B. /; the

问题补充：

—Have you seen book on the desk?

—Is it English book? I saw it just now.

A. the; /

B. /; the

C. the, an

D. a; /

答案：

A. the; /

B. /; the

(答案→)C. the, an

D. a; /

解析：句意：——你看见一本书在桌子上吗？——是本英语书吗？我刚刚看到它。询问看到桌子上那本书是特指，故用定冠词。询问它是不是本英语书表明不确定，故用不定冠词。