For more than a decade, experts from across the globe on the cure of the disease that way
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解决时间 2021-01-26 12:06
- 提问者网友：龅牙恐龙妹
- 2021-01-26 06:42
For more than a decade, experts from across the globe on the cure of the disease that way.
A. worked
B. are working
C. have been working
D. were working
最佳答案
- 五星知识达人网友：躲不过心动
- 2019-05-11 14:08
A. workedB. are working(答案→)C. have been working D. were working解析：可联系答.案.网客服索取。
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- 1楼网友：第四晚心情
- 2020-06-02 19:31
感谢回答，我学习了
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