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

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：考查形容词的最高级。这里是math, music or art 三者做比较，故用最高级。