What do you think of the film Schindler’s List?- This is the best film I have ever

问题补充：

--- What do you think of the film Schindler’s List?

--- This is the best film I have ever seen.

A. that

B. what

C. who

D. whom

答案：

(答案→)A. that

B. what

C. who

D. whom

解析：考查定语从句，先行词是the best film定语从句中缺少宾语，用关系代词，当先行词被最高级或序数词，不定代词修饰时，定语从关系代词用that，不用which，选A。