A: What do you think of the book? B: .A. The picturesB. Not badC. I’m sureD. I don’t think

问题补充：

A: What do you think of the book?

B: .

A. The pictures

B. Not bad

C. I’m sure

D. I don’t think so

答案：

A. The pictures

(答案→)B. Not bad

C. I’m sure

D. I don’t think so

解析：根据问句内容What do you think of the book?，表示问对方认为书本怎样，故答语内容可知答案为形容词，故选B