His first book next month is based on a true story.A. publishedB. to publishC. to be publ

问题补充：

His first book next month is based on a true story.

A. published

B. to publish

C. to be published

D. being published

答案：

A. published

B. to publish

(答案→)C. to be published

D. being published

解析：考查分词做定语。His first book与publish构成被动关系，用过去分词表示被动和已经完成，相当于一个定语从句。Published next month=which was published;句意：上个月出版的他的第一本书是以一个真实的故事为基础的。