问题补充：
His first book next month is based on a true story of his family.
A. published
B. to be published
C. to publish
D. being published
答案：
A. published
(答案→)B. to be published
C. to publish
D. being published
解析：考查非谓语动词。book与public是动宾关系，应该使用过去分词表被动，排除C；done表完成；to be done表将来；being done表进行；根据next month可知表将来，故选B。
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