China the WTO for more than 10 years and it has brought great changes to it.A. has joine

问题补充：

China the WTO for more than 10 years, and it has brought great changes to it.

A. has joined

B. has been in

C. has become a member of

D. has joined in

答案：

A. has joined

(答案→)B. has been in

C. has become a member of

D. has joined in

解析：此题重点考查延续性动词的用法，因时间状语是段时间，故谓语动词要用延续性动词。join是非延续行动词，不能和段时间状语连用。