--What do you think of the film you saw yesterday?Oh! It’s one of films I’ve ever seen.

问题补充：

--What do you think of the film you saw yesterday?

--Oh! It’s one of films I’ve ever seen.

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：考查形容词比较等级的用法。表示在多个中进行比较，用最高级，前加the。根据下文I’ve ever seen.我从未见过的，可知是在多个中进行比较，形容词最高级前的the不能省略，故选D。