--her books?They are in her bag.A. What areB. Where isC. What isD. Where are

问题补充：

--her books?

--They are in her bag.

A. What are

B. Where is

C. What is

D. Where are

答案：

A. What are

B. Where is

C. What is

(答案→)D. Where are

解析：回答语是表示地点在包里，对地点提问的用疑问词where，名词的复数与be动词

are连用，故选D。