问题补充:
The book is great value. It is well worth twice.
A. of, reading
B. of, to be read
C. with, reading
D. with, to be read
答案:
(答案→)A. of, reading
B. of, to be read
C. with, reading
D. with, to be read
解析:句意:这本书是有价值的。它值得读两遍。be of +名词,可以表示形容词。be worth doing 某事值得做。根据句意,故选A。