Each member country WTO must its laws and regulations and pete on the principle of fairness and cooperation.
A. submit to
B. cater to
C. correspond to
Drelate to
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A. submit to
B. cater to
(答案→)C. correspond to
D. relate to
解析：此处submit to屈服；cater to 满足需要，迎合；correspond to相一致，符合；relate to与……相关。句意：世贸组织的每个成员国都必须遵守它的法规，在公正合作的原则下竞争。根据句意选C。