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单选题 She said the international environment ______ since the agreement was signed during the Cold War in 1972. ( )

A. has changed

B. changed

C. had changed

D. changes

大学英语(西安欧亚学院)课程封面

学科:大学英语(西安欧亚学院)

时间:2024-12-22 00:47:54

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