— Which do you think is subject math music or art?[— Art I guess. A. interestingB. mor

问题补充：

— Which do you think is subject, math, music or art?[

— Art, I guess.

A. interesting

B. more interesting

C. most interesting

D. the most interesting

答案：

A. interesting

B. more interesting

C. most interesting

(答案→)D. the most interesting

解析：句意：你认为那个科目最有趣，数学，音乐还是艺术？这里是math, music or art 三者做比较，故用最高级。选D。