问题补充:
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
答案:
A. interested; interest
B. interesting; be interested
C. interested; be interesting
(答案→)D. interesting; interest
解析:考查现在分词作表语,表示主语的特征或性质。