Since the Obama administration took office, the China—US relations positive development t
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解决时间 2021-03-22 09:40
- 提问者网友：刺鸟
- 2021-03-21 15:44
Since the Obama administration took office, the China—US relations positive development thanks to joint efforts of both sides, President Hu said at the Nuclear Security Summit in Washington, April,12,2010.
A. witnessed
B. were witnessed
C. had witnessed
D. have witnessed
最佳答案
- 五星知识达人网友：独钓一江月
- 2021-03-21 17:16
A. witnessedB. were witnessedC. had witnessed(答案→)D. have witnessed解析：可联系答.案.网客服索取。
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- 1楼网友：蓝房子
- 2021-03-21 18:10
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