. — Do you think there is anything interest in the exhibition?
— Yes, I think some of the pictures are .
A. for; of help
B. of; of great help
C. in; of helpful
D. at; helpful
网友回答
A. for; of help
(答案→)B. of; of great help
C. in; of helpful
D. at; helpful
解析：可联系答.案.网客服索取。