Only in 1996 the determination and patience of the scientists with a breakthrough at last
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解决时间 2021-01-03 17:47
- 提问者网友：城市野鹿
- 2021-01-02 22:27
Only in 1996 the determination and patience of the scientists with a breakthrough at last .
A. were ; paid off
B. did; pay back
C. did ; pay off
D. did ; pay for
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- 五星知识达人网友：往事埋风中
- 2021-01-02 23:43
A. were ; paid offB. did; pay back(答案→)C. did ; pay offD. did ; pay for解析：可联系答.案.网客服索取。
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- 1楼网友：夜风逐马
- 2021-01-03 01:04
正好我需要
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