32．Many experimentsbefore the research team was able to get the exact data to carry on pro
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解决时间 2021-04-10 15:43
- 提问者网友：精神病院里
- 2021-04-09 16:36
32．Many experiments before the research team was able to get the exact data to carry on project.
A. have done
B. had been doing
C. had been done
D. have been done
最佳答案
- 五星知识达人网友：玩家
- 2021-04-09 17:39
A. have doneB. had been doing(答案→)C. had been doneD. have been done解析：可联系答.案.网客服索取。
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- 1楼网友：街头电车
- 2021-04-09 19:08
谢谢解答
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