It is reported that China will not buy the Euro debt until some thorough research ______. A. has bee...
2022-10-18 23:28:46 137次 2016届江苏省高三下学期周练英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
It is reported that China will not buy the Euro debt until some thorough research ______.
A. has been done B. will have been done
C. will be done D. had been done
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