The film Not One Less, on a real story, is very instructive and well worth seeing.
A. to base
B. be based
C. basing
D. based
网友回答
A. to base
B. be based
C. basing
(答案→)D. based
解析：考查过去分词做定语：be based on以…为基础，这里用过去分词based on…做定语，修饰The film Not One Less，句意：电影《一个不能少》是以真实的故事为基础的，很有教育意义值得看。选D。