There are a few books on the shelf. But only one of them is. A. worth to be readB. worth

问题补充：

There are a few books on the shelf. But only one of them is.

A. worth to be read

B. worth being read

C. well worth reading

D. worth read

答案：

A. worth to be read

B. worth being read

(答案→)C. well worth reading

D. worth read

解析：本题的含义是书架上有一些书，但只有一本书值得去看，be worth reading表示值得去看的意思，故本题选C。