Though the book is a little expensive, it is .
A. very worth buying
B. well worth to be bought
C. well worth buying
D. very worthy buying
网友回答
A. very worth buying
B. well worth to be bought
(答案→)C. well worth buying
D. very worthy buying
解析：考查短语：be worth doing值得做某事，非常值得用well而不用very修饰，所以选C。