问题描述：
______book of this writer is East and West.
A Known to be the best B It was the best known
C Known as the best D The best known
但不知道为什么C为什么不可以?
A Known to be the best B It was the best known
C Known as the best D The best known
但不知道为什么C为什么不可以?
问题解答：
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