It is believed that if a book is , it will surely the reader.
A. interested; interest
B. interesting; be interested
C. interested; be interesting
D. interesting; interest
网友回答
A. interested; interest
B. interesting; be interested
C. interested; be interesting
(答案→)D. interesting; interest
解析：前者是作表语，表示“(令人)有趣的”，用interesting，后者是在will后作谓语，用动词原形，表示“使(人)有趣”是interest。