569.So far nobody has claimed the money _____ in the library.
A.discovered
B.to be discovered
C.discovering
D.having discovered
570.His first book _____ next month is based on a true story.
A.published
B.to be published
C.to publish
D.being published
569.答案是A;discovered后置作定语修饰the money。
570.答案是B;由时间状语next month得知所填非谓语动词表示将来的动作，故用动词不定式。
