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The machine _____, the next step was how to operate it.A、having been installedB
The machine _____, the next step was how to operate it.A、having been installedB
游客
2024-08-04
38
管理
问题
The machine _____, the next step was how to operate it.
选项
A、having been installed
B、had been installed
C、having being installed
D、has been installed
答案
A
解析
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