The novel is said the month before.
A. to publish
B. to be published
C. publish
D. to have been published
网友回答
A. to publish
B. to be published
C. publish
(答案→)D. to have been published
解析：这题考查 不定式做 主语补足语的用法：Sb/Sth is said +不定式，因为这个小说是前一个月已经被出版 ，所以用不定式的完成式的被动。选D。