—Were you surprised by the ending of the film? --No. I the book, so I already knew the

—Were you surprised by the ending of the film?
----No. I the book, so I already knew the story.
A. was reading
B. am reading
C. have read
D. had read

A. was readingB. am readingC. have read(答案→)D. had read解析：考查时态，由前面的句子可以知道是过去时，由后面的句子I already knew the story可以知道书已经开始看完了，所以用过去完成时，句子意思“我已经读过书，因此我知道这个故事”，所以选D

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