题海让大学四年没有难题
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题目详情

单选题 The students were participating _____ an international energy-saving competition between towns in New England and Canada

A. for

B. in

C. to

D. at

大学英语(西安文理学院)课程封面

学科:大学英语(西安文理学院)

时间:2023-05-08 09:23:13

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